SEP Ahead Beacon 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
2006-12-12T06:11:50.000	SEP_Beacon_factors_ahead_000.txt
2006-12-15T21:50:49.000	SEP_Beacon_factors_ahead_001.txt
2006-12-29T16:06:46.000	SEP_Beacon_factors_ahead_000.txt
2100-01-01T00:00:00.000	SEP_Beacon_factors_ahead_002.txt
ENDENDENDENDENDENDENDEN	ENDENDENDENDENDENDENDENDENDENDEN