Values for C2H2 from our polynomial fit to the data.
 T(K)     P(bar)
 55.00   1.33e-16
 56.00   3.37e-16
 57.00   8.25e-16
 58.00   1.96e-15
 59.00   4.52e-15
 60.00   1.02e-14
 61.00   2.22e-14
 62.00   4.73e-14
 63.00   9.84e-14
 64.00   2.00e-13
 65.00   3.98e-13
 66.00   7.75e-13
 67.00   1.48e-12
 68.00   2.77e-12
 69.00   5.11e-12
 70.00   9.23e-12
 71.00   1.64e-11
 72.00   2.87e-11
 73.00   4.95e-11
 74.00   8.41e-11
 75.00   1.41e-10
 76.00   2.33e-10
 77.00   3.79e-10
 78.00   6.11e-10
 79.00   9.72e-10
 80.00   1.53e-09
 81.00   2.38e-09
 82.00   3.66e-09
 83.00   5.57e-09
 84.00   8.39e-09
 85.00   1.25e-08
 86.00   1.85e-08
 87.00   2.72e-08
 88.00   3.95e-08
 89.00   5.69e-08
 90.00   8.13e-08
 91.00   1.15e-07
 92.00   1.62e-07
 93.00   2.27e-07
 94.00   3.15e-07
 95.00   4.33e-07
 96.00   5.93e-07
 97.00   8.06e-07
 98.00   1.09e-06
 99.00   1.46e-06
100.00   1.95e-06
101.00   2.59e-06
102.00   3.42e-06
103.00   4.50e-06
104.00   5.87e-06
105.00   7.63e-06
106.00   9.87e-06
107.00   1.27e-05
108.00   1.63e-05
109.00   2.07e-05
110.00   2.63e-05
111.00   3.33e-05
112.00   4.19e-05
113.00   5.25e-05
114.00   6.56e-05
115.00   8.16e-05
116.00   1.01e-04
117.00   1.25e-04
118.00   1.54e-04
119.00   1.88e-04
120.00   2.30e-04
121.00   2.80e-04
122.00   3.40e-04
123.00   4.12e-04
124.00   4.97e-04
125.00   5.97e-04
126.00   7.16e-04
127.00   8.56e-04
128.00   1.02e-03
129.00   1.21e-03
130.00   1.44e-03
131.00   1.70e-03
132.00   2.01e-03
133.00   2.37e-03
