diff --git a/src/+edu/+stanford/+covert/+cell/+sim/+util/HighthroughputExperimentsLogger.m b/src/+edu/+stanford/+covert/+cell/+sim/+util/HighthroughputExperimentsLogger.m
index 0fab152..863b088 100644
--- a/src/+edu/+stanford/+covert/+cell/+sim/+util/HighthroughputExperimentsLogger.m
+++ b/src/+edu/+stanford/+covert/+cell/+sim/+util/HighthroughputExperimentsLogger.m
@@ -426,7 +426,7 @@
             
             %% average over time
             %calculate means and variances
-            nTime = numel(this.time);
+            nTime = find(this.time, 1, 'last');
             
             this.metConcs.mean  = 1 / nTime * this.metConcs.sum;
             this.dnaSeq.mean    = 1 / nTime * this.dnaSeq.sum;