LET Ahead Level 1 Calibration database.
For each row:
	The timestamp in column 1 is the END of the period
	for which the calibration file in column 2 is valid.
BEGIN
2006-11-16T18:39:34.875 LET_Level1_factors_ahead_000.txt
2006-11-17T19:43:55.500 LET_Level1_factors_ahead_003.txt
2006-12-12T06:11:50.000	LET_Level1_factors_ahead_000.txt
2006-12-15T21:50:49.000	LET_Level1_factors_ahead_001.txt
2006-12-29T16:06:46.000	LET_Level1_factors_ahead_000.txt
2015-03-21T00:00:00.000	LET_Level1_factors_ahead_002.txt
2015-07-15T17:31:00.000	LET_Level1_factors_ahead_001.txt
2022-08-31T13:48:00.000 LET_Level1_factors_ahead_002.txt
2022-09-02T14:32:00.000 LET_Level1_factors_ahead_001.txt
2037-01-01T00:00:00.000	LET_Level1_factors_ahead_002.txt
ENDENDENDENDENDENDENDEN	ENDENDENDENDENDENDENDENDENDENDEN