1. In v4.0 and higher, choose Edit>Wells>Modify; in older versions, choose Edit>Obs. Well>Edit.
2. Click the Observations tab (v3.0+) or the Edit button (older versions).
3. Enter observations recorded during the recovery phase of the test consisting of time since the start of pumping and residual drawdown. Residual drawdown is the water-level displacement (change in water level from the static, pre-pumping condition) measured during recovery.

With AQTESOLV, you can enter both drawdown and recovery data in the same data set. The program lets you analyze both sets of measurements (drawdown and recovery) with any pumping test solution.