Table 12.— Probability sampling expansions of bloodworm catch and effort ( + 1 SE) and ratios estimates for catch/unit effort ( + 1 SE) by month and for the 6-mo 



sampling period (1973-76). 



1973 Bloodworms 



Probabi 1 i ty Samp 1 i ng Expans ions 



Ratios of 2 Variables 



1973 



Total Total 

 Catch in Catch in 

 Pounds Numbers 



Total 

 Value of 

 Catch in 



Do] lars 



Total 

 No. of 

 Digger- 



Ti des 

 Duq 



Total 

 No. of 

 Digger- 

 Hours 



Duq 



Total Worm 

 Catch in 



Number/Dig- 

 qer Tide 



Total Catch 



in Numbers/ 



Digger 



Hours 



Total 



Catch in 



Pounds/ 



Di gger 



Tide 



Total 



Catch in 



Pounds/ 



Digger 



Hours 



Apri ] 



3,03A,896 



±1,335,169 



145,073 

 ± 64,674 



6,900 

 ± 2,958 



16,617 



± 7,739 



418 

 ± 23 



173 

 ± 19 



- 



- 



May 



5,888,97't 

 ±2,609,582 



293,411 

 ±130,875 



13,832 

 ± 5,870 



39,385 

 ±17,295 



388 

 ± 55 



139 



± 21 



- 



- 



June 



5, 800, 704 

 ±3,883,5')') 



288,597 

 ±194,539 



10,374 

 ± 6,756 



26,638 

 ±17,028 



524 

 ± 48 



196 

 ± 18 



- 



- 



July 



6,766,569 

 ±3,079,667 



338,328 

 ±153,983 



13,537 



± 5,219 



31,710 

 ±12,540 



516 

 ± 82 



215 

 ± 38 



- 



- 



Aug. 



7,515,01)0 

 ±3,827,157 



375,752 

 ±191,358 



9,440 

 ± 4,141 



23,320 

 ±11,384 



666 

 ±128 



251 

 ± 32 



- 



- 



Sept. 



l), 1*31 , 768 



±2, 039, 640 



221,588 



±101 ,982 



5,808 

 ± 2,472 



12,309 

 ± 5,574 



737 

 ±153 



299 

 ± 33 



- 



- 



To ta 1 s 



33,437,951 

 ±7,208,753 



1,662,750 

 ±360,396 



59,891 

 ±11,804 



149,978 

 ±31,094 



536 

 ± 36 



210 

 ± 12 



- 



- 



1 97^ Bloodworms 







Probabi 1 



i ty Sampl i nq Expans 



ions 

 Total 



Total 





Ratios of 2 Variabl 



es 

 Total 



Total 









Total 



No. of 



No. of 



To ta 1 Wo rm 



Total Catch 



Catch in 



Catch in 





Total 



Total 



Value of 



Digger- 



Digger- 



Catch in 



in Numbers/ 



Pounds/ 



Pounds/ 





Catch i 



n Catch in 



Catch in 



Tides 



Hours 



Number/Dig- 



Digger 



Digger 



Digger 



1974 



Pounds 



Numbers 



Dol lars 



Duq 



Dug 



qer Tide 



Hours 



Tide 



Hours 



Apri 1 



26,303 



5,778,108 



288,905 



11 ,214 



28,869 



539 



206 



2.38 



• 91 





±12,841 



±2,693,900 



±134,695 



± 5,656 



±14,701 



±40 



±19 



± .08 



±•03 



May 



27,388 



6,165,533 



308,277 



8,127 



26,951 



841 



254 



3.74 



1.13 





±25,251 



±5,684,341 



±284,217 



± 7,492 



±24,848 



+ - 



+- 



+ 



+ - 



June 



37,253 



7,338,112 



368,969 



11,473 



32,439 



571 



216 



2-93 



1.11 





±19,527 



±3,903,567 



±194,748 



± 5,378 



±17,320 



±40 



± 7 



t .19 



±.04 



July 



48,139 



8,056,594 



402,830 



13.468 



37,550 



605 



218 



3.76 



1.36 





±28,485 



±4,667,030 



±233,352 



± 8,158 



±22,942 



±28 



± 4 



± .13 



±.09 



Aug. 



27,323 



4,362,800 



218,140 



9,360 



27,385 



509 



170 



3.17 



1.06 





±14,675 



-2, 250, 516 



±112,526 



± 5,062 



±16,326 



±48 



±10 



± -30 



±.07 



Sept. 



40,171 



5,744,270 



309,865 



8,698 



24,714 



718 



256 



5.32 



1 .90 





±10,725 



±1,745,874 



±104,836 



± 2,814 



± 9,372 



±98 



±20 



±1.23 



±.34 



Totals 



206,577 



37,445,417 



1 ,896,986 



62,339 



177,909 



630 



219 



3.53 



1.23 





±48,224 



±9,203,300 



±463,632 



±14,735 



±44,880 



±20 



± 5 



± .20 



±.06 



38 



