^ " ? ^r * Total catch during the complete census, 



Fj_ = Number of Individual fishermen contributing Hi hours of effort. 



F - 2 Fi<, 



C = C/R = Average catch for each fisherman in the complete census, 



^r " H/fe = Average time fished by each fisherman in the complete 

 census , 



Incomplete Census 



Double subscript conventions "ij" 



i (first subscript) defines the location (ioO, that strip L^) 

 covered during the i''^^ hour, 



J (second subscript) referes to the j'^^ hour of the day in strip 

 L^o The actual strip during this particular hour is denoted 

 by L^y The observer makes his observations on L^j^y therefore. 



d = Number of "incomplete" trips made during the period of D days, 



hj_^ = Number of hours of effort carried out during the j'^^ hourly 



ij 



interval in L^, that is, L^i 



fj_^ » Number of individual fishermen contributing hj_j hours of fish- 



ing effort to L^^o 



kj^i » Actual count of fishermen, made while covering L^^. 



tjj ■ Total time fished by the k'^^ fisherman, in some given region 

 along the lakeshore, 



E(ti^) = E(t) = Expected time fished by any one fisherman, [E(t) can 

 be thought of as an average , taken over all possible fisher- 

 men. It will eventually be replaced by the approximation. Ho] 



Pjj « p « Probability of observing the k " fisherman in L^^, 



H^ "2 h^^o (Corresponds to H in the complete census,) 



Ff " 2 f. . (Corresponds to F in the complete census,) 



It should be noted that there are usually two elements h^^, two 

 elements f^^, and two elements k^-, since the i hour will (generally) 

 be included twice in the incomplete sampling scheme during each biweekly 



30 



