Data from Robin migration and climate change

Variable name description:
ID = ID for individual robins (progressive numbers);
Lat2 = Latitude of the site where Robin was recovered during wintering;
Lon2 = Longitude of the site where Robin was recovered during wintering;
Lat1 = Latitude of the site where Robin was recovered during breeding;
Lon1 = Longitude of the site where Robin was recovered during breeding;
Year = Year when a robin was recovered in winter (from November of year i to February of year i + 1);
Country = Country where a robin was observed during the breeding period;
gridID = ID of the 2.5 ° lat x 2.5° lon cell where the robin was observed during the breeding period;
Cluster = Cluster to which the robin belong, as assessed by migratory connectivity analysis;
DistMig = migration distance calculated as the great-circle (orthodromic) distance between breeding and wintering position (km);
CminT = temperature anomaly for the cell where the robin was observed breeding during the winter when it was recovered in winter (°C);
CmaxTS = temperature anomaly for the cell where the robin was observed breeding during the summer when it was recovered in winter (°C);
CminAT = temperature anomaly for the cell where the robin was observed breeding during the autumn when it was recovered in winter (°C);
CminT1 = temperature anomaly for the cell where the robin was observed breeding during the winter preceding the one when it was recovered in winter;
pop.index = population index in the country where a robin was observed breeding in the year when it was recovered in winter (index in the reference year = 0);
Adult = whether a robin was adult or young when recovered in winter;