The inside share is exact count arithmetic.

highlighted = computed this step

Inside count

All 5 observations are inside the limits.

inside count=5\text{inside count}=5
Inside checksThe table uses one for inside the two limits.inside checksvaluedeviationinside18-212100139-114111151221

Inside share

The inside share is 1.

5/5=15 / 5 = 1
Inside checksThe table uses one for inside the two limits.inside checksvaluedeviationinside18-212100139-114111151221