25525 AFSC/NMML: Shore-based counts of the Eastern North Pacific gray whale stock from central California, 1967 - 2007 Data Set Published / External 23107 Cetacean Assessment and Ecology Program Project Completed 2007 The National Marine Fisheries Service (NMFS) has conducted shore-based counts of the Eastern North Pacific stock of gray whales (Eschrichtius robustus) 26 years from 1967 to 2008 at Granite Canyon (or nearby at Yankee Point), 13 km south of Carmel, in central California. Convenient access to the Granite Canyon research station (owned by NOAA but operated by the State of California Department of Fish and Game) and the narrowness of the whales' migratory corridor in this area permitted an efficient counting process at this site. All counts were conducted during the 2-month southbound migration (mid-December to late February) rather than the protracted 3-month northbound migration. The routine nature of these counts and the consistency in research protocol lend themselves to inter-annual trend analyses. Research protocol has been based on single observers independently searching for whales and recording data on environmental conditions and the time, location, count, and direction of travel for each sighting. The counting system and observer performance has been tested through paired, independent observational effort; aerial surveys; thermal imagery; radio-tagging of whales; systematic observations through high-powered (25x) binoculars; and teams of observers tracking specific whale pods through the viewing area. Shore-based counts of gray whales have provided the fundamental data used to establish the abundance of the Eastern North Pacific Stock of Gray Whales. These abundance estimates are applied to trends analyses to establish the health of the stock. Results from this study were the basis for removing this stock of whales from the list of Endangered and Threatened Wildlife, the first mammalian species to do so without going extinct. Similarly, results from the shore-based counts are used by the International Whaling Commission to estimate the health of the stock relative to whaling quotas used by the Chukotka Eskimos and Makah Indians. Loaded by FGDC Metadata Uploader, batch 6252, 06-17-2015 19:01 The following FGDC sections are not currently supported in InPort, but were preserved and will be included in the FGDC export: - Taxonomy (FGDC:taxonomy) - Spatial Reference Information (FGDC:spref), - Spatial Data Organization Information (FGDC:spdoinfo) Theme abundance Temporal winter National Marine Mammal Laboratory Seattle WA United States Data Set Annually Table (digital) NA Land-based NA 25526 AllRecentData Published / External Completed Gray whale shore based effort and sighting data since 1987/88 during southbound migration off Granite Canyon/Pt Lobos. Loaded by FGDC Metadata Uploader, batch 6252, 06-17-2015 19:01 Data File Gray whale shore based effort and sighting data since 1987/88 during southbound migration off Granite Canyon/Pt Lobos. SEQUENCE NUMBER No No Active Start year and numeric sequence number Domain not specified. - Domain not specified. LOCATION Unknown No No Active Location at Granite Canyon (GC): S - South, N - North, B - Bigeye shed, P - GC parking lot; LS,LN - Pt Lobos S/N EXPERIMENT Unknown No No Active Code: 1 - single survey, 2 - dual observer, 3 - Linkage test 4 - Distant whale, 5 - Pod size calibration, 6 -whale tracking DATE NUMBER No No Active Date 12/10/87 - 02/22/07 OBSERVER Unknown No No Active Observer initials or code - see observer table EFLAG VARCHAR No No Active Event flag: 1- start watch, 2 - Environment change, 3 - gw sighting, 4 - comment, 5 - end watch, 6 - other cetacean sighting, 7 - start vessel watch, 8 - vessel sighting, 9 - end vessel watch Codeset: Event flag ETIME NUMBER No No Active Time in decimal hours 0 - 23:59:59 VISCODE VARCHAR No No Active Visibility code: 1 - Excellent, 2 - Very Good, 3 - Good, 4 -Fair, 5:Poor, 6 - Unusable Codeset: Visibility WINDDIR NUMBER No No Active WindDirection (eg NW, SSW etc or 0-360 ) 0 - 359 WINDFORCE VARCHAR No No Active Beaufort code Codeset: Beaufort scale NTIME NUMBER No No Active Time of north sighting (decimal hours) 0 - 23:59:59 NANGLE NUMBER No No Active Magnetic angle of north sighting 0 - 359 NRET NUMBER No No Active North sighting reticle measurement using 7x50 power binoculars; prior to 1995 only one reticle measurement stored in NRET and SRET 0 - 30 NEST NUMBER No No Active E if estimated reticle; For 1987/88 estimated distances were converted to reticle value Domain not specified. - Domain not specified. STIME NUMBER No No Active Time of south sighting (decimal hours) 0 - 23:59:59 SANGLE NUMBER No No Active Magnetic angle of south sighting 0 - 359 SRET NUMBER No No Active South sighting reticle measurement using 7x50 power binoculars; prior to 1995 only one reticle measurement stored in NRET and SRET 0 - 30 SEST Unknown No No Active E if estimated reticle; For 1987/88 estimated distances were converted to reticle value PODSIZE NUMBER No No Active Number of animals in pod 1 - infinity C_CPAIR NUMBER No No Active Number of cow/calf pairs 0 - infinity TRAVELDIR Unknown No No Active Whale travel direction: S = south, N = north, M = milling BEHAVIOR Unknown No No Active Behavior code; 1 = breaching, 2 = spyhop, 3 = lobtailing, 4 = flipper slap, 5 = mating, 6 = feeding, 7 = resting, 8 = associated with other animals, 9= porpoising NCUES NUMBER No No Active Number of cues 1 - infinity COMMENTS Unknown No No Active Observer comments; in 1987/88 comments constructed with watch, distance class if estimated and distance value used if reticle No domain defined. 25527 EffortPre1987 Published / External Completed Gray whale shore based counting effort including 1967 to 1986/87 during the southbound migration off Yankee Point/Granite Canyon. Loaded by FGDC Metadata Uploader, batch 6252, 06-17-2015 19:01 Data File Gray whale shore based counting effort including 1967 to 1986/87 during the southbound migration off Yankee Point/Granite Canyon. ID NUMBER No No Active Auto Number for primary key 1 - 1765 Location VARCHAR No No Active Location code: 1 is Yankee Point and 2 is Granite Canyon; different from Location in RecentSurveyData Codeset: Location Day NUMBER No No Active Day of month for survey effort 1 - 31 Month NUMBER No No Active Month for survey effort 1 - 12 Year NUMBER No No Active Year of survey effort 1967 - 1986 Watchperiod VARCHAR No No Active Watch period: 1,2 or 3 Codeset: Watch period Observer VARCHAR No No Active Numeric code for observer - see ObserverCodes table Codeset: Observer code Begintime NUMBER No No Active Time of beginning of watch 0 - 23:59:59 Endtime NUMBER No No Active Time of end of watch 0 - 23:59:59 Block1winddirection NUMBER No No Active First recorded WindDirection (0 to 360) 0 - 359 Block1beaufort VARCHAR No No Active First recorded Beaufort (0 - 9) Codeset: Beaufort scale Block1visibility VARCHAR No No Active First recorded visibility code: 1 - Excellent, 2 - Very Good, 3 - Good, 4 - Fair, 5 - Poor, 6 - Unusable Codeset: Visibility Block2winddirection NUMBER No No Active Second recorded WindDirection 0 - 359 Block2beaufort VARCHAR No No Active Second recorded Beaufort Codeset: Beaufort scale Block2visibility VARCHAR No No Active Second recorded visibility code Codeset: Visibility Block3winddirection NUMBER No No Active Third recorded WindDirection 0 - 359 Block3beaufort VARCHAR No No Active Third recorded Beaufort Codeset: Beaufort scale Block3visibility VARCHAR No No Active Third recorded Visibilty code Codeset: Visibility key Unknown No No Active Key field of date_watch to link up to sightings No domain defined. Use Unknown No No Active No if Beaufort or Vis >4 on effort record or any associated sighting; yes otherwise 25528 ERSightingsPre1987 Published / External Completed Gray whale shore based sighting data from 1967 to 1986/1987 during southbound migration off Yankee Pt/Granite Canyon. Loaded by FGDC Metadata Uploader, batch 6252, 06-17-2015 19:01 Data File Gray whale shore based sighting data from 1967 to 1986/1987 during southbound migration off Yankee Pt/Granite Canyon. ID NUMBER No No Active Autonumber for primary key Domain not specified. - Domain not specified. Location VARCHAR No No Active Location code: 1 is Yankee Point and 2 is Granite Canyon; different from Location in RecentSurveyData Codeset: Location Day NUMBER No No Active Day of month of sighting 1 - 31 Month NUMBER No No Active Month of sighting 1 - 12 Year NUMBER No No Active Year of sighting 1967 - 1987 Watchperiod Unknown No No Active Watch period originally assigned to sighting based on initial time of sighting Northtime NUMBER No No Active Time of north sighting 0 - 23:59:59 Southtime NUMBER No No Active Time of south sighting 0 - 23:59:59 Podsize NUMBER No No Active Estimated size of the pod 1 - infinity Distanceoffshore NUMBER No No Active Estimated distance offshore in distance intervals; unclear whether it is statute or nautical miles- assumed to be nautical 0 - 9 Traveldirection Unknown No No Active Direction of travel of the whales: S for south and N for North Winddirection NUMBER No No Active Direction of the wind at time of sighting (0 to 360) 0 - 359 Beaufort VARCHAR No No Active Beaufort value at time of sighting Codeset: Beaufort scale Visibility VARCHAR No No Active Visibility code at time of sighting: 1: Ex, 2: Very Good, 3: Good, 4: Fair, 5:Poor, 6: Unusable Codeset: Visibility Podsizeflag Unknown No No Active * if no pod size in data an assumed value of 1 was entered Northangle NUMBER No No Active Angle of north sighting (not recorded 1967-1977); in 1978 recorded +/- relative to abeam; 1979 on as magnetic bearing 0 - 359 Southangle NUMBER No No Active Angle of south sighting (not recorded 1967-1977); in 1978 recorded +/- relative to abeam; 1979 on as magnetic bearing 0 - 359 Verticalangle NUMBER No No Active Vertical angle ala reticle measurement at S. sighting 0 - 359 Behavior Unknown No No Active Various behavioral codes used in 1979 Timeinsert Unknown No No Active Either N or S if north or south time was computed and inserted into the data record Visflag Unknown No No Active * if not in data and surmised from nearby sightings Flukes NUMBER No No Active Number of flukes seen Domain not specified. - Domain not specified. Breaches NUMBER No No Active Number of breaches seen 0 - infinity Cue Unknown No No Active Cue for sighting Distanceflag Unknown No No Active E - estimated; C- calculated Sightabilitycode Unknown No No Active 1 or 2; reason for it not clear and only used in 1985/86 survey Observer Unknown No No Active Numeric code for observer that made sighting (ObserverCodes table) key Unknown No No Active Key field of date and assigned watch period to link to effort No domain defined. Assignedwatchperiod Unknown No No Active Watch period assigned to period based on time abeam relative to begin/end times of watches Included Unknown No No Active Defined field which is True if Timeabeam is contained in a effort period and False otherwise Timeabeam NUMBER No No Active Computed time at which whale crosses line extending from shed at angle of 241; Used south or north time prior 1979; 1979+ calculated value using 3.25 nm whale speed 0 - 23:59:59 25529 ObserverCodes Published / External Completed Observer codes used during shore based gray whale surveys. Loaded by FGDC Metadata Uploader, batch 6252, 06-17-2015 19:01 Observer codes used during shore based gray whale surveys. ID NUMBER No No Active Autonumber 1 - 67 Observer Unknown No No Active Observer identity codes assigned until 1988 Initials Unknown No No Active Observer initials used as observer code after 1988 Name Unknown No No Active Full name of observer 25530 SurveyHistory Published / External Completed History of site locations including dates, altitude, and task Loaded by FGDC Metadata Uploader, batch 6252, 06-17-2015 19:01 Data File History of site locations including dates, altitude, and task ID NUMBER No No Active Autonumber 1 - 41 Start NUMBER No No Active Date 12/18/1967 - 01/02/2008 End NUMBER No No Active Date 02/03/1968 - 02/09/2008 GeneralLocation Unknown No No Active Location of shore based effort; GC - Granite Canyon, YP - Yankee Point, L/LN/LS - Pt Lobos, north or south PrimaryLocation Unknown No No Active Shed used for primary counts of gray whale PrimaryAltitude NUMBER No No Active Altitude of primary location (observer eye height above sea level) 21 - 24 SecondaryLocation Unknown No No Active Shed used for secondary counts of gray whale when paired independent observer were available SecondaryAltitude NUMBER No No Active Altitude of secondary location (observer eye height above sea level) 21 - 24 BigeyeAltitude NUMBER No No Active Altitude of 25x binoculars (lens height above sea level) 21 - 24 TrackingLocation Unknown No No Active Shed used for pairs of observers tracking gray whale pods TrackingAltitude NUMBER No No Active Altitude of shed used for tracking gray whale pods 21 - 24 AuxLocation Unknown No No Active Location of observers doing auxiliary tests AuxAltitude NUMBER No No Active Altitude of auxiliary observer 21 - 24 Comments Unknown No No Active Comments No domain defined. Data Steward 2015 Person Hobbs, Rod rod.hobbs@noaa.gov Distributor 2015 Organization NOAA National Centers for Environmental Information NCEI ncei.info@noaa.gov https://ror.org/04r0wrp59 https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. Online Resource https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0138007 Originator 2015-06-17 Organization Alaska Fisheries Science Center AFSC afsc.webmaster@noaa.gov https://ror.org/01h7fye62 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA (206) 526-4000 (206) 526-4004 https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center AKFSC Home Page Online Resource 0700-1700 Pacific Time Point of Contact 2015-06-17 Person Clapham, Phillip phillip.clapham@noaa.gov Ground Condition -121.94 -121.91 36.5 36.4 Granite Canyon and Yankee Point, California Range 1967 2007 Unclassified At this time data can be downloaded from the Alaska Fisheries Science Center website: http://www.afsc.noaa.gov/nmml/software/eranalysis.php There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed. User must read and fully comprehend the metadata prior to use. User must acknowledge the Originator when using the data set as a source. User must share data products developed using the source data set with the Originator. Data should not be used beyond the limits of the source scale. https://www.afsc.noaa.gov/nmml/software/eranalysis.php 2015 Organization NOAA National Centers for Environmental Information https://ror.org/04r0wrp59 csv files. A page on the Marine Mammal Laboratory website also has a description of the project and access to the data: ERAnalysis: An R package for Analysis of Gray Whale Southbound Migration Survey Data https://www.afsc.noaa.gov/nmml/software/eranalysis.php csv (comma-separated values) CSV - Comma Separated Values (Text) Access Southbound gray whale surveys have been conducted over a 40 year period (1967-2007) and while the data collection process has been similar throughout that timeframe, as one might expect, there have been changes to the type and format of the data that were collected. The most notable change began during the 1987/88 survey and has been continued through the 2006/2007 survey. Prior to 1987, the data were collected with a single record that described the survey effort for a watch period. The effort record would contain up to 3 sets of environmental variables (Beaufort (windforce), wind direction and visibility) to record changes in those variables throughout the watch. Those same variables might also be recorded whenever gray whales were sighted. Data for sightings were recorded as separate records with a different format. Unfortunately, no times were recorded with the environment change except for a sighting. Thus, there was no way to know how much of the effort was associated with a particular set of conditions. This was changed in 1987 when the data were collected as an event log with a single data record for each event. The type of event for the record was defined by the field EFLAG which initially had values 1: begin watch, 2: environment change, 3: gray whale sighting, and 4: comment. The set of values for EFLAG has expanded in time. With this format, the time for each environment change was recorded so the amount of survey time under specific conditions (eg fair or better visibility) could be measured. In addition, during the 1987/88 survey and in each subsequent survey, during some or all of the survey, two independent observers searched at the same time to enable an assessment of the number of gray whales that were missed by a single observer. This is denoted by the EXPERIMENT field which was initially defined as 1 when a single observer was searching and 2 when two independent observers were searching. The list of values for this field has subsequently expanded to specify other activities such as observations from the 25x binoculars, podsize calibration, etc. Each observer was designated with a specific LOCATION (eg S for south shed, N for north shed) and each year one of the positions was chosen as the primary location. This has been S with the exception of the 2000/01 and 2001/02 surveys when it was N. The observer data from primary location is used to generate the abundance estimates with corrections for missed whales that are assessed using the simultaneous surveys conducted from the secondary location during some or all of the entire survey period. With the data format changing so dramatically it was necessary to store the data in different database tables. The data collected from 1967-1985, are stored in 2 tables (EffortPre1987 and ERSightingsPre1987) with the first being the data for survey effort and the second for gray whale sightings. The data collected from 1987 to the present is stored in the single table (AllRecentData) in the event log format as it was recorded on the datasheets in the field. Within these two periods, there were other changes in the format and data that were collected and to get them into a common format some changes had to be made to the data format and coding. For data collected from 1967-1987, the data were keypunched onto cards and often the changes were simply in the order or number of columns that were used for each data field. In other cases the coding might change for a field like travel direction or wind direction. Also, new data fields might be added or dropped through time. To accommodate these differences a common set of fields were chosen and values were re-coded (e.g., 1 to S, 2 to N for travel direction). If a data field was not recorded in a particular year, it was given the value of NA for each entry. Each of the original data definitions and formats for the various years can be examined with the following documents: GrayWhale.Format.1984-85.pdf, The data for each of the surveys was checked for accuracy in some form when they were collected in the field for completeness and accuracy. Data collected from 1967-1988 were keypunched and presumably also validated with computer checks. Data collected during the 1992/93 and 1993/1994 surveys were entered into EXCEL spreadsheets and filtered with range checks and with computer code for analysis of the data. Data from 1995/96 and onward were entered directly into a database program with the most recent version being ERABUND (ERABUND Users_guide243.pdf). Each of the database programs would make sure valid data were entered and would perform completeness checks (e.g., each start watch contained a matching end watch). In the process of merging the data more complete QC procedures were conducted with all of the data and numerous errors and missing records were found in the data collected prior to 1987 and these were documented as described above. Far fewer errors were found in the more recent data but some corrections were made primarily with the EXPERIMENT field where some of the observers in the recent years confused the roles of EXPERIMENT and LOCATION. Some fields like ETIME (event time) and sighting times (STIME/NTIME) had not been checked for consistency so some errors like an ETIME of 7:00 with an STIME of 19:00 were corrected but they were not common. Also, some start/end watch records were incorrectly matched and this was discovered during the analysis process. See descriptions of methods at http://www.afsc.noaa.gov/nmml/software/eranalysis.php No 0 No No Unknown NCEI-MD Unknown IT Security and Contingency Plan for the system establishes procedures and applies to the functions, operations, and resources necessary to recover and restore data as hosted in the Western Regional Support Center in Seattle, Washington, following a disruption. 1 For years since 1987, observers checked their hand-written data sheets the day of collection, filling in redundant information (such as the header on the data form) and corrected obvious errors (such as misspellings in comments). Each observer then entered their data into a computer database (ERAbund). The database entry program had built-in boundaries for each data field (e.g., a logical date, a list of possible observer initials, and a range of possible entries for visibility, Beaufort state, etc.) to eliminate common data-entry errors. 2 Preferably within a day or two of the original data entry, NMML observers worked in pairs to compare all of the handwritten data sheets to printouts of the corresponding records in the database. This provided a check of the accuracy of data transfer from handwritten logs to the database, and gave two more people a chance to review the data, watching for possible illogical errors (e.g., only gray whale sightings have data in columns for location and pod size; keeping environmental condition records in chronological order; starting and ending watches with the appropriate codes). 25526 Entity 25528 Entity 25527 Entity 25529 Entity 25530 Entity gov.noaa.nmfs.inport:25525 Janice Waite 2015-06-17T19:00:39 SysAdmin InPortAdmin 2026-03-04T19:17:19 2018-11-30 Alaska Fisheries Science Center AFSC 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA https://www.afsc.noaa.gov 0700-1700 Pacific Time 1001 Public No No 2018-11-30 1 Year 2019-11-30 none whale Kingdom Animalia Genus Eschrichtius Species robustus Gray whale Point AllRecentData Gray whale shore based effort and sighting data since 1987/88 during southbound migration off Granite Canyon/Pt Lobos. Database manager SEQUENCE Start year and numeric sequence number Database manager Domain not specified. Domain not specified. LOCATION Location at Granite Canyon (GC): S - South, N - North, B - Bigeye shed, P - GC parking lot; LS,LN - Pt Lobos S/N Database manager EXPERIMENT Code: 1 - single survey, 2 - dual observer, 3 - Linkage test 4 - Distant whale, 5 - Pod size calibration, 6 -whale tracking Database manager DATE Date Database manager 12/10/87 02/22/07 OBSERVER Observer initials or code - see observer table Database manager EFLAG Event flag: 1- start watch, 2 - Environment change, 3 - gw sighting, 4 - comment, 5 - end watch, 6 - other cetacean sighting, 7 - start vessel watch, 8 - vessel sighting, 9 - end vessel watch Database manager Event flag ETIME Time in decimal hours Database manager 0 23:59:59 VISCODE Visibility code: 1 - Excellent, 2 - Very Good, 3 - Good, 4 -Fair, 5:Poor, 6 - Unusable Database manager Visibility WINDDIR WindDirection (eg NW, SSW etc or 0-360 ) Database manager 0 359 WINDFORCE Beaufort code Database manager Beaufort scale NTIME Time of north sighting (decimal hours) Database manager 0 23:59:59 NANGLE Magnetic angle of north sighting Database manager 0 359 NRET North sighting reticle measurement using 7x50 power binoculars; prior to 1995 only one reticle measurement stored in NRET and SRET Database manager 0 30 NEST E if estimated reticle; For 1987/88 estimated distances were converted to reticle value Database manager Domain not specified. Domain not specified. STIME Time of south sighting (decimal hours) Database manager 0 23:59:59 SANGLE Magnetic angle of south sighting Database manager 0 359 SRET South sighting reticle measurement using 7x50 power binoculars; prior to 1995 only one reticle measurement stored in NRET and SRET Database manager 0 30 SEST E if estimated reticle; For 1987/88 estimated distances were converted to reticle value Database manager PODSIZE Number of animals in pod Database manager 1 infinity C_CPAIR Number of cow/calf pairs Database manager 0 infinity TRAVELDIR Whale travel direction: S = south, N = north, M = milling Database manager BEHAVIOR Behavior code; 1 = breaching, 2 = spyhop, 3 = lobtailing, 4 = flipper slap, 5 = mating, 6 = feeding, 7 = resting, 8 = associated with other animals, 9= porpoising Database manager NCUES Number of cues Database manager 1 infinity COMMENTS Observer comments; in 1987/88 comments constructed with watch, distance class if estimated and distance value used if reticle Database manager No domain defined. EffortPre1987 Gray whale shore based counting effort including 1967 to 1986/87 during the southbound migration off Yankee Point/Granite Canyon. Database manager ID Auto Number for primary key Database manager 1 1765 Location Location code: 1 is Yankee Point and 2 is Granite Canyon; different from Location in RecentSurveyData Database manager Location Day Day of month for survey effort Database manager 1 31 Month Month for survey effort Database manager 1 12 Year Year of survey effort Database manager 1967 1986 Watchperiod Watch period: 1,2 or 3 Database manager Watch period Observer Numeric code for observer - see ObserverCodes table Database manager Observer code Begintime Time of beginning of watch Database manager 0 23:59:59 Endtime Time of end of watch Database manager 0 23:59:59 Block1winddirection First recorded WindDirection (0 to 360) Database manager 0 359 Block1beaufort First recorded Beaufort (0 - 9) Database manager Beaufort scale Block1visibility First recorded visibility code: 1 - Excellent, 2 - Very Good, 3 - Good, 4 - Fair, 5 - Poor, 6 - Unusable Database manager Visibility Block2winddirection Second recorded WindDirection Database manager 0 359 Block2beaufort Second recorded Beaufort Database manager Beaufort scale Block2visibility Second recorded visibility code Database manager Visibility Block3winddirection Third recorded WindDirection Database manager 0 359 Block3beaufort Third recorded Beaufort Database manager Beaufort scale Block3visibility Third recorded Visibilty code Database manager Visibility key Key field of date_watch to link up to sightings Database manager No domain defined. Use No if Beaufort or Vis >4 on effort record or any associated sighting; yes otherwise Database manager ERSightingsPre1987 Gray whale shore based sighting data from 1967 to 1986/1987 during southbound migration off Yankee Pt/Granite Canyon. Database manager ID Autonumber for primary key Database manager Domain not specified. Domain not specified. Location Location code: 1 is Yankee Point and 2 is Granite Canyon; different from Location in RecentSurveyData Database manager Location Day Day of month of sighting Database manager 1 31 Month Month of sighting Database manager 1 12 Year Year of sighting Database manager 1967 1987 Watchperiod Watch period originally assigned to sighting based on initial time of sighting Database manager Northtime Time of north sighting Database manager 0 23:59:59 Southtime Time of south sighting Database manager 0 23:59:59 Podsize Estimated size of the pod Database manager 1 infinity Distanceoffshore Estimated distance offshore in distance intervals; unclear whether it is statute or nautical miles- assumed to be nautical Database manager 0 9 Traveldirection Direction of travel of the whales: S for south and N for North Database manager Winddirection Direction of the wind at time of sighting (0 to 360) Database manager 0 359 Beaufort Beaufort value at time of sighting Database manager Beaufort scale Visibility Visibility code at time of sighting: 1: Ex, 2: Very Good, 3: Good, 4: Fair, 5:Poor, 6: Unusable Database manager Visibility Podsizeflag * if no pod size in data an assumed value of 1 was entered Database manager Northangle Angle of north sighting (not recorded 1967-1977); in 1978 recorded +/- relative to abeam; 1979 on as magnetic bearing Database manager 0 359 Southangle Angle of south sighting (not recorded 1967-1977); in 1978 recorded +/- relative to abeam; 1979 on as magnetic bearing Database manager 0 359 Verticalangle Vertical angle ala reticle measurement at S. sighting Database manager 0 359 Behavior Various behavioral codes used in 1979 Database manager Timeinsert Either N or S if north or south time was computed and inserted into the data record Database manager Visflag * if not in data and surmised from nearby sightings Database manager Flukes Number of flukes seen Database manager Domain not specified. Domain not specified. Breaches Number of breaches seen Database manager 0 infinity Cue Cue for sighting Database manager Distanceflag E - estimated; C- calculated Database manager Sightabilitycode 1 or 2; reason for it not clear and only used in 1985/86 survey Database manager Observer Numeric code for observer that made sighting (ObserverCodes table) Database manager key Key field of date and assigned watch period to link to effort Database manager No domain defined. Assignedwatchperiod Watch period assigned to period based on time abeam relative to begin/end times of watches Database manager Included Defined field which is True if Timeabeam is contained in a effort period and False otherwise Database manager Timeabeam Computed time at which whale crosses line extending from shed at angle of 241; Used south or north time prior 1979; 1979+ calculated value using 3.25 nm whale speed Database manager 0 23:59:59 ObserverCodes Observer codes used during shore based gray whale surveys. Database manager ID Autonumber Database manager 1 67 Observer Observer identity codes assigned until 1988 Database manager Initials Observer initials used as observer code after 1988 Database manager Name Full name of observer Database manager SurveyHistory History of site locations including dates, altitude, and task Database manager ID Autonumber Database manager 1 41 Start Date Database manager 12/18/1967 01/02/2008 End Date Database manager 02/03/1968 02/09/2008 GeneralLocation Location of shore based effort; GC - Granite Canyon, YP - Yankee Point, L/LN/LS - Pt Lobos, north or south Database manager PrimaryLocation Shed used for primary counts of gray whale Database manager PrimaryAltitude Altitude of primary location (observer eye height above sea level) Database manager 21 24 SecondaryLocation Shed used for secondary counts of gray whale when paired independent observer were available Database manager SecondaryAltitude Altitude of secondary location (observer eye height above sea level) Database manager 21 24 BigeyeAltitude Altitude of 25x binoculars (lens height above sea level) Database manager 21 24 TrackingLocation Shed used for pairs of observers tracking gray whale pods Database manager TrackingAltitude Altitude of shed used for tracking gray whale pods Database manager 21 24 AuxLocation Location of observers doing auxiliary tests Database manager AuxAltitude Altitude of auxiliary observer Database manager 21 24 Comments Comments Database manager No domain defined.