Returns a numerical value indicating the day of the week that the specified merged session in a multi-data series chart starts, where 0 = Sunday, 1 = Monday, etc. Merged session extends from the earliest start time to the latest end time of all sessions merged.
Where: SessionNum - a numerical expression specifying the Session Number
Assign a value, indicating the day of the week that the 4th merged session starts, to Value1 variable:
Value1 = SessionStartDayMS(4);