Index: /trunk/MagicSoft/Mars/mcorsika/MCorsikaEvtHeader.h
===================================================================
--- /trunk/MagicSoft/Mars/mcorsika/MCorsikaEvtHeader.h	(revision 9330)
+++ /trunk/MagicSoft/Mars/mcorsika/MCorsikaEvtHeader.h	(revision 9331)
@@ -25,10 +25,10 @@
     Float_t  fFirstInteractionHeight; // [cm] z coordinate, first intercation height
 
-    Float_t  fMomentumX;              // [GeV/c]
-    Float_t  fMomentumY;              // [GeV/c]
-    Float_t  fMomentumZ;              // [GeV/c]
+    Float_t  fMomentumX;              // [GeV/c] "+west"    "-east"
+    Float_t  fMomentumY;              // [GeV/c] "+south"   "-north" (north denotes the magnet north which is defined to be in the geografic north!)
+    Float_t  fMomentumZ;              // [GeV/c] "+upwards" "-downwards"
 
     Float_t  fZd;                     // [rad] Zenith distance
-    Float_t  fAz;                     // [rad] Azimuth (north=0; east=90)
+    Float_t  fAz;                     // [rad] Azimuth (north=0; east=90) (north denotes the magnet north which is defined to be in the geografic north!)
 
     Float_t  fX;                      // [cm] Position of telescope on ground x / - impact parameter x