             keyColumnStartFrontMarker,
             keyColumnStartFrontDeltaTime,
             keyColumnStartFrontStrip,
+            keyColumnStartBackSumm,
             keyColumnStartBackEnergy,
             keyColumnStartBackMarker,
             keyColumnStartBackDeltaTime,

    fileprivate var keyColumnTofDeltaTime = "dT(TOF-RFron)"
    fileprivate var keyColumnStartEvent = "Event($)"
    fileprivate var keyColumnStartFrontSumm = "Summ($Fron)"
    fileprivate var keyColumnStartFrontEnergy = "$Fron"
    fileprivate var keyColumnStartFrontMarker = "$FronMarker"
    fileprivate var keyColumnStartFrontDeltaTime = "dT($FronFirst-Next)"

                            field = String(format: "%d", strip)
                        }
                    }
                case keyColumnStartBackSumm:
                    if row == 0 && startParticleType != recoilType {
                        if let summ = getSummEnergyFrom(fissionsAlphaBackPerAct) {
                            field = String(format: "%.7f", summ)
                        }
                    }
                case keyColumnStartBackEnergy:
                    let array = startParticleType == recoilType ? recoilsBackPerAct : fissionsAlphaBackPerAct
                    if row < array.count {
