Table B7 



Standard Deviation of A amps , Nov 93-Sep 94, Back Basin (Only 



Cases with 8 or More Observations are Shown) 



(sec) 



m (deq going toward, referenced to true north) 



<195 



195-205 



205-215 



215-225 



225-235 



235-245 



<8 





0.03 



0.08 



0.02 







8-9 





0.02 



0.02 



0.03 







9-10 



0.03 



0.03 



0.04 









10-11 



0.04 



0.04 



0.05 



0.04 





0.04 



11-12 



0.04 



0.04 



0.05 



0.03 







12-13 



0.03 



0.04 



0.04 



0.05 



0.04 





13-14 



0.04 



0.03 



0.04 



0.06 







14-15 



0.02 



0.03 



0.03 



0.04 







15-16 





0.03 



0.02 



0.02 







16-17 



0.03 



0.04 



0.06 









17-18 



0.03 



0.01 











18-19 





0.03 











19-20 





0.02 











20-21 















>21 















B8 



Appendix B Means and Standard Deviations from Field Gages 



