MagPenguinTrips.csv This dataset contains one row for each trip (with sufficient data to define trip endpoint) for each penguin. Columns: SeasonYear Calendar year of the beginning of the breeding season (September-February). Start trip year may be SeasonYear (if trip started in December) or SeasonYear + 1 (if trip started in January or February). PenguinID ID number of the penguin. InstrumentSeq Unique identifier of the deployment (penguin tracked in a breeding season). TripNumber Number of the trip in the deployment. Numbers are not necessarily contiguous because some trips lacked enough locations to define the trip distance. PrevTripNumber Number of the previous trip in the deployment. NA for the first trip of the deployment. NextTripNumber Number of the next trip in the deployment. NA for the last trip of the deployment. TripDistance Straight-line distance (km) between the penguin's nest and the at-sea location farthest from the nest for the trip (trip endpoint). PrevDistance Trip distance (km) for the previous trip in the deployment. NA for the first trip of the deployment. NextDistance Trip distance (km) for the next trip in the deployment. NA for the last trip of the deployment. Bearing Bearing (degrees) from the penguin's nest to the at-sea location farthest from the nest for the trip. North = 360. PrevBearing Bearing (degrees) of the previous trip. NA for the first trip of the deployment. NextBearing Bearing (degrees) of the next trip. NA for the last trip of the deployment. RelyDur 0 = duration of the trip is reliable; 1 = duration of the trip is not reliable (missing locations at the beginning or end of the trip). DurDays Duration (days) of the trip. NA if RelyDur = 1. PrevDur Duration (days) of the previous trip. NA for the first trip of the deployment. NextDur Duration (days) of the next trip. NA for the last trip of the deployment. Latitude Latitude (degrees, decimal minutes) of the at-sea location farthest from the penguin's nest (trip endpoint). Longitude Longitude (degrees, decimal minutes) of the at-sea location farthest from the penguin's nest (trip endpoint). PrevLat Latitude (degrees, decimal minutes) of the at-sea location farthest from the penguin's nest for the previous trip. NA for the first trip of the deployment. PrevLon Longitude (degrees, decimal minutes) of the at-sea location farthest from the penguin's nest for the previous trip. NA for the first trip of the deployment. NextLat Latitude (degrees, decimal minutes) of the at-sea location farthest from the penguin's nest for the next trip. NA for the last trip of the deployment. NextLon Longitude (degrees, decimal minutes) of the at-sea location farthest from the penguin's nest for the next trip. NA for the last trip of the deployment. LatitudeNest Latitude (degrees, decimal minutes) of the penguin's nest. LongitudeNest Longitude (degrees, decimal minutes) of the penguin's nest. InstrType Type of tracking instrument: 1 = Argos PTT; 2 = GPS archival tag. InstrModel Model of the tracking instrument. See paper for details. StartTripYear Calendar year of the first at-sea location of the trip. StartTripMonth Calendar month of the first at-sea location of the trip. StartTripDay Calendar day of the first at-sea location of the trip. StartTripHour Hour of the first at-sea location of the trip. StartTripMinute Minute of the first at-sea location of the trip. StartTripSecond Second of the first at-sea location of the trip. PenguinSex Sex of the penguin: 1 = female; 0 = male. NumTrips Number of trips recorded while the penguin carried the tracking tag. NumChicksDeploy Number of chicks in the nest when the tracking tag was attached to the penguin. NumChicksTrip Number of chicks in the nest at the start of the trip. NumFledged Number of chicks that fledged: last seen after 10 January and weighed at least 1800 g. DistBetweenNext Distance (km) between the endpoint of the trip and the endpoint of the next trip. NA for the last trip of the deployment. DistBetweenPrev Distance (km) between the endpoint of the trip and the endpoint of the previous trip. NA for the first trip of the deployment. DurOutDays Duration (days) of the outbound part of the trip (nest to first location >= 80% of the trip distance). See paper for details. DurForDays Duration (days) of the foraging part of the trip (first location >= 80% of the trip distance to last location >= 80% of the trip distance). See paper for details. DurInDays Duration (days) of the inbound part of the trip (last location >= 80% of the trip distance to the nest). See paper for details. ChlaMean Mean chlorophyll-a (mg/m^3) concentration in 16-km square around the trip endpoint, 8-day averaged, 4-km resolution. A proxy for productivity. See paper for details. NA (missing) for 1996. ChlaSD Standard deviation of chlorophyll-a concentration in 16-km square around the trip endpoint. NA (missing) for 1996. ChlaNumCells Number of cells used to calculate chlorophyll-a mean. See R package rerddapXtracto. NA (missing) for 1996. ChlaDate Date of chlorophyll-a data, from rxtracto command (R package rerddapXtracto). NA (missing) for 1996. ChlaLonMin Minimum longitude (degrees, decimal minutes) of area used for chlorophyll-a mean. NA (missing) for 1996. ChlaLonMax Maximum longitude (degrees, decimal minutes) of area used for chlorophyll-a mean. NA (missing) for 1996. ChlaLatMin Minimum latitude (degrees, decimal minutes) of area used for chlorophyll-a mean. NA (missing) for 1996. ChlaLatMax Maximum latitude (degrees, decimal minutes) of area used for chlorophyll-a mean. NA (missing) for 1996. ChlaRequestDate Date penguin was at endpoint of trip. Used in rxtracto command (R package rerddapXtracto). May differ from ChlaDate because chlorophyll data are averaged at regular 8-day intervals, and penguin trip endpoint dates are not at regular intervals. NA (missing) for 1996.