Table 2: Observations Log.
Transition Date Freq $T_{\rm sys}$ Beam $\eta _{\rm mb}$ t(int) Map parameters

Size Points Size Spacing

(MM/YY) (GHz) (K) ( $\hbox{$^{\prime\prime}$ }$ ) (s) ( $\hbox{$^{\prime\prime}$ }$ ) ( $\hbox{$^{\prime\prime}$ }$ )

$~{\rm ^{12}CO}$ J=2-1 12/90; 05/91 230 920 21 0.69 480 40 $30\times50$ 10

$~{\rm ^{12}CO}$ J=3-2 12/93 345 1475 14 0.53 400 18 $40\times50$ 12

05/97; 05/01 660 0.60 70 400 $60\times120$ 6

$~{\rm ^{12}CO}$ J=4-3 03/94; 04/96 461 3950 11 0.50 600 16 $24\times20$ 6

12/01 2100 0.52 1200 6 $18\times12$ 6

$~{\rm ^{13}CO}$ J=2-1 06-95 220 370 21 0.69 2520 1 - -

$~{\rm ^{13}CO}$ J=3-2 05-97; 05/01 330 600 14 0.63 3600 9 $15\times15$ 7.5

CI ³P₁-³P₀ 11-94 492 6675 10 0.53 960 4 - -

**Table 2:** Observations Log.
Transition	Date	Freq	$T_{\rm sys}$	Beam	$\eta _{\rm mb}$	t(int)	Map parameters
				Size			Points	Size	Spacing
	(MM/YY)	(GHz)	(K)	( $\hbox{$^{\prime\prime}$ }$ )		(s)		( $\hbox{$^{\prime\prime}$ }$ )	( $\hbox{$^{\prime\prime}$ }$ )
$~{\rm ^{12}CO}$ J=2-1	12/90; 05/91	230	920	21	0.69	480	40	$30\times50$	10
$~{\rm ^{12}CO}$ J=3-2	12/93	345	1475	14	0.53	400	18	$40\times50$	12
	05/97; 05/01		660		0.60	70	400	$60\times120$	6
$~{\rm ^{12}CO}$ J=4-3	03/94; 04/96	461	3950	11	0.50	600	16	$24\times20$	6
	12/01		2100		0.52	1200	6	$18\times12$	6
$~{\rm ^{13}CO}$ J=2-1	06-95	220	370	21	0.69	2520	1	-	-
$~{\rm ^{13}CO}$ J=3-2	05-97; 05/01	330	600	14	0.63	3600	9	$15\times15$	7.5
CI ³P₁-³P₀	11-94	492	6675	10	0.53	960	4	-	-

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