YEAR	Month Name	Date Range	# of Calendar Days	RAW (in days)	DOP (in days)	DOP (duty cycle)	SHC (duty cycle) l=800	TMS (duty cycle) l=800
1997	GONG 18	0108-0212	36	22	22	14.3%
	GONG 19	0213-0320	36	30	30	26.4%
	GONG 20	0321-0425	36	30	30	26.9%	9.2%	O
	-	DynamicsRun 0413-0612	61	52	X	X	X	X
	-	SummerRun 0413-0810	120	91	X	X	X	X
	GONG 21	0426-0531	36	34	34	38.2%	29.4%	X
	GONG 22	0601-0706	36	32	32	40.6%	35.8%	X
	GONG 23	0707-0811	36	32	32	37.1%	35.1%	X
	GONG 24	0812-0916	36	35 *	5	4.2%	O	O
	GONG 25	0917-1022	36	29 *	22	18.5%	O	O
	GONG 26	1023-1127	36	26	25	14.8%	X	X
	GONG 27	1128-0102	36	24	23	11.5%	7.4%	X

obslog.JPG     obslog.PS
obslog_with_CR.JPG     obslog_with_CR.PS
obslog97_archived.JPG

* These months had RAW data days taken using both Na and K filters.
GONG 24: 5 Na, 30 K
GONG 25: 23 Na, 6 K