Daily Test Statistics
The number of the first stat period in a test in which a position was entered
In the default Results Section, "Periods" is defined as S.Number - S.First + 1, and is then used in all of the stats calculations that require a test period count.
By using Periods in this way, the stats accurately reflect the span of time which which actual trading occurs, and omit any "warm-up" bars where indicators are still being calculated.
The Combined S.First value is the smallest value for any strategy (benchmark strategies are not included in combined stats).
In the Summary Report, the individual strategy stats will each reflect that strategy's number of periods (assuming default results.rts formulas).
The bar size units of S.First will always be the test-level bar size, not the strategy-specific bar size.