1 files changed, 1 insertions, 0 deletions
diff --git a/fileio/root.C b/fileio/root.C
index 9a959f5..8f7d0a9 100644
--- a/fileio/root.C
+++ b/fileio/root.C
@@ -18,6 +18,7 @@ struct Track {
   double t;
   TVector3 pos;
   TVector3 dir;
+  double start_time;
   double total_energy;
 };