Output And Levels Of Income
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The calculation of annual output has many difficulties. Apart from the fact that a complete record for the six months under observation could not be obtained for all types of fishing, even where it has been taken a simple doubling of the result would not be an accurate figure of annual output, because of seasonal variations. The method I have followed is first to allot to each type of fishing an estimated full output for the six months' period on the basis of what was probably produced by those units not fully recorded. Such known factors as the state of the fishing each day, my counts of boats at sea and boats remaining on the beach, the prospects of individual units in terms of available crew and equipment and other available occupations have been taken into account. The estimated full output for the six months' period is then converted into output for the whole year from information available to me from the fishermen about conditions during these unrecorded months, and supplemented by sample observations I made before and after the period of systematic record. The results are approximate, but I think it probable that they represent the 1939-40 output for the area within about 10 per cent. margin of error (see Table 11).