Table 1: Overview of ISO-LWS and SWAS observations.

	ISO-LWS   observations		SWAS    observations
Source	observation number	observing mode	observing period	integration time
AFGL 2591	52 800 108	LWS04	1999, Jun. 25 - Dec. 17a	54.7 hr
NGC 7538 IRS9	57 100 914	LWS04	2000, Jul. 16 - Aug. 10	50.5 hr
W 3 IRS5	47 301 306	LWS04	2000, Aug. 11 - 13	10.7 hr
S 140 IRS1	36 802 110	LWS04	1998, Dec. 20 - 1999, Jul. 21a	18.3 hr
NGC 7538 IRS1	84 201 112	LWS04	2001, Jul. 13 - 19	18.8 hr
MonR2 IRS3	-	-	2001, Sep. 19 - Oct. 8	17.6 hr

^a  Snell et al. (2000).