Biomass and abundance at length of small pelagic fish estimated during the PELGAS survey in the Bay of Biscay in springtime dataset

Fields description:
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survey		: survey code
year		: year
sp		: species code (cf. below)
L		: length (cm)
WatLength	: biomass (metric ton)
NatLength	: abundance (thousands of individuals)

Species codes:
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Code		Scientific name
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SARD-PIL	Sardina pilchardus
SPRA-SPR	Sprattus sprattus
ENGR-ENC	Engraulis encrasicolus
MICR-POU	Micromesistius poutassou
CAPR-APE	Capros aper
TRAC-TRU	Trachurus trachurus
TRAC-MED	Trachurus mediterraneus
SCOM-COL	Scomber colias
SCOM-SCO	Scomber scombrus