(a) | These data are the best available to NOAA's National Marine Fisheries Service (NMFS) when this report was compiled. Data for this report may be supplied to NOAA Fisheries Service (NMFS) from the following sources: (1) vessels via Vessel Monitoring System; (2) Vessel Trip Reports; (3) fish dealer purchase reports; and the (4) NOAA Fisheries Service Observer Program, through audited observer reports submitted by the Northeast Fisheries Science Center. Data in this report are for landings made through April 30 2016 and may be preliminary. Differences with data from previous reports are due to corrections made to the database and updates to observer data. |
(b) | Data has been truncated due to confidentiality |
(c) | Estimates for attributes are at the individual row level. |
(d) | A subtrip is not necessarly unique to an individual strata (row) except in the case of unit stocks (Plaice, Witch Flounder,White Hake,Pollock,Redfish,Ocean Pout,Halibut,and Wolfish) |
VARIABLE DEFINITIONS |
VARIABLE NAME |
DEFINITION |
Fishing Year | Groundfish fishing year which spans from May 1 of the year through April 30 of the following year |
Stock | Allocated and Non-allocated Groundfish Stock |
Gear | Vessel Gear Type |
Number Vessels | Number unique vessels |
Subtrips | Number of subtrips |
Subtrips Observed | Number of subtrips observed |
Subtrips Observed Percent | Percent of subtrips observed |
Discard Ratio | Estimated Discard Ratio from observed trips: Discard Observed / Kept Observed |
Discard Ratio Variance | Variance of the estimated discard ratio |
CV | Realized Coefficient of Variation: (Discard Ratio Variance)^0.5 / Discard Ratio |
Subtrips CV30 | Estimated number of subtrips required for a coefficient of variation of 30 percent |
Subtrips CV30 Percent | Estimated percent of subtrips required for a coefficient of variation of 30 percent |
Stock Landings | Stock live pounds landed |
Kept All | Total live pounds of all species landed |
Kept Observed | Live pounds of all species landed on observed trips |
Discard Observed | Observed stock discard |
Discard Unobserved | Estimated Discard on un-observed trips: Discard Ratio * Kept All |
Days | Actual time absent on a fishing trip in days |
Days Full | Sum of time absent on fishing trips rounded to the full day: Example A trip of 1.1 days = 2 days |
Days Observed | Actual time absent of observed fishing trips in days |
Days Observed Full | Sum of time absent of observed fishing trips rounded to the full day |