Table A2. Observed transitions of C2D4 trimer
(in units of 1/cm)

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P(11)    2196.9802
p(10)    2197.0823
P( 9)    2197.1852
P( 8)    2197.2876
P( 7)    2197.3908
P( 6)    2197.4934
P( 5)    2197.5966
P( 4)    2197.6989
P( 3)    2197.8010
P( 2)    2197.9033
Q( J)    2198.1076
R( 1)    2198.3138
R( 2)    2198.4167
R( 3)    2198.5184
R( 4)    2198.6208
R( 5)    2198.7234
R( 6)    2198.8246
R( 7)    2198.9262
R( 9)    2199.1294
R(10)    2199.2308
R(11)    2199.3321
R(12)    2199.4330
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