Add constants for the min num results

and the min num of secs that the results must be away from each
other.

sbws/globals.py

@@ -38,6 +38,8 @@ TORFLOW_OBS_LAST = 0
 TORFLOW_OBS_MEAN = 1
 TORFLOW_OBS_DECAYING = 3
 TORFLOW_ROUND_DIG = 3
+DAY_SECS = 86400
+NUM_MIN_RESULTS = 2
 
 BW_LINE_SIZE = 510