Table 6»- ~Aiialysis of effects of areas> processes^ and dates of collection 



♦ The areas represented by the nuabers are as follows » l) Long Island, 



Northern New Jersey, 2) Southern New Jersey, Delaware, 3) Chesapeake Bay, 

 U) North Carolina, Florida, 5) Gulf of Mexico east of Mississippi delta, 

 6) Gulf of Mexico west of the delta. 



Note t Analysis of variance ignoring processes and adjusting for the vmequal 

 numbers in each area indicates that areas may have some effect in all 

 cases except water insoluble natter. Note that including the 

 one observation of viscosity equal to 3000** so increases the variability 

 that even the large differences cannot be regarded as significant. 

 Qnission of this observation changes the significance of values for area 

 2, but not for the other areas. 



Specific comments on data In table 6: 



Dry solids The values for areas U, 5, and 6 appear to differ 

 from, those of areas 1, 2, and 3* 



Ammonia The values for area 6 appear to be a good bit 



higher. The other areas ore not different among 

 themselves. 



Fat The values for areas U and 5 are significantly 

 lower than for the others. 



Total ash The values for areas 1 and 5 are significantly 

 lower than for the others. 



Viscosity After caiitting the value of 3000° in area 2 sanqjle 

 the analysis indicates that the values in area 1 

 may be regarded as higher than the others which do 

 not differ among themselves. 



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