Table 10 

 Statistical Analysis of Historical Data for Chosen Parameters 

 Thickness of the First Gradient (ft) 



Numher 

 of Years Maximum 

 of Data Mean 



20 

 69 



120 

 33 

 32 

 31 



Minimum 

 Mean 



JANUARY 



20 

 20 



20 

 20 



FEBRUARY 



20 

 20 

 26 

 11 



MARCH 



Range 



20 



h9 

 h9 



100 



13 



6 



20 



One- 



Degree 

 Quadrangle 



34N47W 

 3i<-W48w 

 35N47W 

 35n48w 

 35K48w* 



34Nit8w 

 35N47W 

 35N48W 

 35K48W* 



35Ni^7W 

 35N1+8W 

 35NI46W* 



34N47W 

 34w48w 

 35Nij-7W 

 35n48w 

 35Nii5w* 



3i»-N47W 

 34nU7W 

 35NU7W 

 35NU8W 

 35Ni^8w* 



34Ni^7W 

 3ii-Ki48w 

 35W^7W 

 35Ni^8w 

 35NJ+8W* 



* 20-minute square centered at this location 



Maximum Maximum Percentage 

 Standard Standard of Obs . > 

 Error Deviation Max» BT Depth 



96 



99 



100 



9.6 

 9.0 



11.6 

 7.5 



35.0 

 3^.0 



26,0 

 19.5 



5 



3^^ 



20 



14 



6.7 



15.1 



8 



ito 



13 

 APRIL 



27 



9.9 



24.2 



2 



36 



36 



__ 



6.8 



27.8 



3 



i^5 



23 



22 



12.4 



25.2 



3 



53 



29 



24 



8.2 



36.9 



6 



80 



23 



57 



5.9 



27.1 



6 



37 



13 



MAY 



24 



4.6 



32.2 



2 



106 



40 



66 



13.1 



47.2 



1 



76 



76 



-- 



8.8 



28.0 



5 



89 



51 



38 



23.3 



69.9 



6 



107 



40 



67 



11.6 



65.6 



9 



108 



44 



JUNE 



64 



11.4 



121.5 



3 



157 



112 



45 



27.9 



96.8 



4 



191 



103 



88 



24.3 



97.3 



3 



156 



118 



38 



17.8 



77.9 



5 



193 



121 



72 



25.1 



105.0 



6 



167 



1?1 



46 



16.6 



83.0 



85 



95 

 90 

 93 

 93 



100 

 91 



37 

 50 

 46 

 70 

 59 



34 

 



28 

 19 



10 



21 



17 



8 



14 



12 



39 



