         }
         return s + ")"
     }
+    fileprivate func keyColumnGammaMarker(_ max: Bool) -> String {
+        var s = "Gamma"
+        if max {
+            s += "Max"
+        }
+        return s + "Marker"
+    }
     fileprivate var keyColumnGammaCount = "GammaCount"
     fileprivate var keyColumnSpecial = "Special"
     fileprivate func keyColumnSpecialFor(eventId: Int) -> String {

                                     energy: energy,
                                     encoder: encoder,
                                     deltaTime: deltaTime,
                                     side: nil)
        return item
    }

                keyColumnGammaEnergy(false),
                keyColumnGammaEncoder(false),
                keyColumnGammaDeltaTime(false),
                keyColumnGammaMarker(false),
                keyColumnGammaCount
            ])
            let headers = setupHeaders(columnsGamma)
