The resource is structured with the following columns:
sample_date
Format: date
Description: Sample collection date

river
Format: character
Description: River name from where the sample was collected; used in the context of the catchment

long
Format:numeric
Description: Longitude coordinate (WGS)
lat numeric Latitude coordinate (WGS)

length_cm
Format: numeric
Description: Fish length in centimeters

weight_kg
Format:numeric
Description: Fish weight in kilogrammes

freshwater_age
Format: numeric
Description: Age of the fish during the freshwater life phase

sea_age
Format: numeric
Description: Age of the fish during the marine water life phase; excluding the freshwater age

previous_spawner
Format: character
Description: A fish that has previously spawned, deduced by observations from the scale reader

farm_escape
Format: character
Description: A fish produced in an aquaculture facility that has subsequently escaped to the wild

sex_visual
Format: character
Description: Samplers visual assessment of the fish sex

sex_chromosomal
Format: character
Description: Laboratory determination of fish sex

coast
Format: character
Description: East / West coast Scotland designation