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Length-Weight Parameters for Pollachius virens
Length-weight (log a vs b) graph
    [n=20]
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a b Country Locality
Score a b Doubtful? Sex Length (cm) Length
type 		r2 SD b SD log10 a n Country Locality
0.02040 2.808   unsexed 28.5 - 106.5 TL  0.982      187  North Sea / (May) 1994-1995 
0.01640 2.859   unsexed 21.5 - 106.5 TL  0.982      215  North Sea / (Quarter 2) 1994-2007 
0.01050 2.950   unsexed 15.5 - 74.5 TL  0.980      132  North Sea / (August) 1997-2007 
0.01070 2.955   unsexed 16.5 - 111.5 TL  0.982      508  North Sea / (July) 1994-2007 
0.01033 2.963   mixed     TL        481  UK Engld Wal not specified (ICES division), 1986 
0.01030 2.963   unsexed 15.5 - 111.5 TL  0.981      642  North Sea / (Quarter 3) 1994-2007 
0.01060 2.964   unsexed 36.5 - 91.5 TL  0.991      551  North Sea / (October) 2002 
0.01040 2.972   unsexed               UK North Sea 
0.00770 3.046   unsexed 16.5 - 113.5 TL  0.993      1055  North Sea / (Quarter 4) 1996-2006 
0.00771 3.048   unsexed               UK Scotland Western 
0.00650 3.060   unsexed 28.5 - 108.5 TL  0.987      109  North Sea / (March) 1994-2003 
0.00679 3.100   mixed 13.0 - 105.0 TL  0.995      1144  USA Atlantic coast / Winter, Spring 1992-1999. 
0.00550 3.107   unsexed 10.5 - 116.5 TL  0.975      4677  North Sea / 1994-2008 
0.00724 3.120   mixed 13.0 - 112.0 TL  0.992      1097  USA Atlantic coast / Autumn 1992-1999. 
0.00540 3.130   unsexed 32.5 - 113.5 TL  0.992      498  North Sea / (November) 1997-2006 
0.00490 3.133   Male 14.5 - 115.5 TL  0.983      3156  North Sea / 1994-2009 
0.00440 3.157   unsexed 10.5 - 116.5 TL  0.978      2071  North Sea / (February) 1994-2008 
0.00430 3.169   Female 23.5 - 116.5 TL  0.980      2618  North Sea / 1994-2009 
0.00400 3.185   unsexed 10.5 - 116.5 TL  0.978      3809  North Sea / (Quarter 1) 1994-2008 
0.00320 3.241   unsexed 16.5 - 115.5 TL  0.977      1628  North Sea / (January) 1994-2007 
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Preliminary parameter estimates are provided below, based on your selection of studies and weighted by the scores.
You may want to exclude or give less weight to studies that are far from the regression line in the graph.
Selected studies = 20, geometric mean a = 0.0074, mean b = 3.05, SD log10(W) = 0.04, SD log10(a) = 0.2088 SD b = 0.1136
Estimate weight for given length: (cm) = (g) 95% range - (g)
Search for more references on length-weight:    Scirus
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