CALCULATING THE GR INDEX (GI)

Based on the Gamma Ray picks of the previous step, it is now possible to calculate the GR index (GI).

The formula for calcualting the Gamma Ray Index (GI) is:

GI=(GRC-GRMIN)/(GRMAX-GRMIN)

	DEPTH	GRC
A	11305	88.0
B	11333	44.6
C	11367	47.1
D	11381	54.0

Based on this equation, enter the values from the table above into the appropriate places in the calculator provided below to determine the correct GI values at each of the specified depths.