ess.snspowder.powgen.data.extract_proton_charge# ess.snspowder.powgen.data.extract_proton_charge(dg)[source]# Return the proton charge from a loaded data group. Return type: ProtonCharge[TypeVar(RunType, ess.reduce.nexus.types.SampleRun (int), ess.reduce.nexus.types.VanadiumRun (int))]