The file scallop_stock_assessment_summary_by_area.csv contains the summary outputs from the SAM stock assessment. It includes data from Tables A.11, A.19, A.28, A.37 and A.45 in the report.

The variables in the file are:

Area
Description: Scottish scallop stock assessment area name
Type: categorical
Levels: 5 (East Coast, North East, North West, Shetland, West of Kintyre)
Note: Data are only available for those assessment areas which have an analytical assessment.

Year
Description: calendar year of data
Type: discrete
Range: 1982, 2024
Note: Range of data differs between stock assessment areas

Recruitment estimate
Description: stock assessment estimates of the number of individual scallops recruiting to the stock at age 3 (in thousands).
Type: continuous
Range: 2825, 44990
Note: Values presented are rounded to nearest integer.

Recruitment low
Description: stock assessment estimates of the lower 95% confidence interval on the Recruitment estimate (in thousands).
Type: continuous
Range: 2086, 40626
Note: Values presented are rounded to nearest integer.

Recruitment high
Description: stock assessment estimates of the upper 95% confidence interval on the Recruitment estimate (in thousands).
Type: continuous
Range: 3266, 74097
Note: Values presented are rounded to nearest integer.

SSB estimate
Description: stock assessment estimates of the spawning stock biomass of scallops (in tonnes).
Type: continuous
Range: 3119, 21928
Note: Values presented are rounded to nearest integer.

SSB low
Description: stock assessment estimates of the lower 95% confidence interval on the SSB estimate (in tonnes).
Type: continuous
Range: 2882, 19934
Note: Values presented are rounded to nearest integer.

SSB high
Description: stock assessment estimates of the upper 95% confidence interval on the SSB estimate (in tonnes).
Type: continuous
Range: 3375, 34623
Note: Values presented are rounded to nearest integer.

Fbar estimate
Description: stock assessment estimates of the annual fishing mortality averaged over ages 4 to 8..
Type: continuous
Range: 0.042, 0.454
Note: Values presented are rounded to 3 decimal places.

Fbar low
Description: stock assessment estimates of the lower 95% confidence interval on the Fbar estimate.
Type: continuous
Range: 0.023, 0.385
Note: Values presented are rounded to 3 decimal places.

Fbar high
Description: stock assessment estimates of the upper 95% confidence interval on the Fbar estimate.
Type: continuous
Range: 0.068, 0.605
Note: Values presented are rounded to 3 decimal places.