sp: 
Species code



age: 
Age (year)

year: year of survey


wmL.size.esdu: 
mean length-at-age (cm), weighted by fish abundance per length class (best mean length-at-age estimator)



wmW.size.esdu
: mean weight-at-age (g), weighted by fish abundance per length class (best mean weight-at-age estimator)



wvarL.size.esdu: 
length-at-age (cm) variance, weighted by fish abundance per length class



wvarW.size.esdu: 
weight-at-age (g) variance, weighted by fish abundance per length class



wL.CV: 
length-at-age (cm) coefficient of variation (%)



wW.CV: 
weight-at-age (g) coefficient of variation (%)



CAMPAGNE: 
survey name



CATEG: 
size category



a: 
length-weight key "a" coefficient, used to calculate weighted mean weights from mean lengths



b: 
length-weight key "b" coefficient, used to estimate weighted mean weights from mean lengths
mL.biometry: un-weighted mean length from individual biological measurements
mw.biometry: un-weighted mean weight from individual biological measurements