diff --git a/Console-Logs.md b/Console-Logs.md
index 7ad3139..73d984b 100644
--- a/Console-Logs.md
+++ b/Console-Logs.md
@@ -262,7 +262,9 @@ The report contains data for the 5 minute interval in the left column, and sessi
 * Line 2: Sample time for current period and session Actual interval usually between 5 & 6 minutes.
 
 * Line 2: Number of shares submitted per minute. Determines effective hash rate, the same way pool's
-calculate hash rate.
+calculate hash rate. The five minute share rate is precise but the session rate may be uinaccurate if the
+stratum difficulty has changed during the session. The reported session share rate is based on the time
+weighted mean stratum difficulty.
 
 * Line 3: Effective hash rate calculated from share rate and stratum difficulty. Should closely follow the
 pool's reported hash rate.