In-Situ Virtual HERMIT Tutorial - Manual (Page 42)

42 Drawdown Calculations
In the chart below, the white line indicates the drawdown for the entire test
and the first step. These values are the same for step 1. The yellow line
indicates the drawdown for the test, and step 2 (total drawdown minus step 1
drawdown).
Test 01 Step 01
Test 01 Step 02