See the Stage Isp/Burn Time/dV. They're all N/A. Moreover, stage Isp doesn't change over altitudes.
Dev Notes: I think this is happening because the delta-V is only reported for the current stage. If the player moves past that stage before the fuel is out, then it will start reporting N/A.
Dev Notes: I think this is happening because the delta-V is only reported for the current stage. If the player moves past that stage before the fuel is out, then it will start reporting N/A.