T(K)	cross sect. at 253.7 nm
-------------------------------
 200	4.35e-18
 300	4.34e-18
 400	4.32e-18
 500	4.30e-18
 600	4.27e-18
 700	4.24e-18
 800	4.20e-18
 900	4.16e-18
1000	4.12e-18
1100	4.09e-18
1200	4.04e-18
1300	4.00e-18
1400	3.96e-18
1500	3.92e-18
1600	3.88e-18
1701	3.84e-18
1800	3.80e-18
1900	3.75e-18
2000	3.71e-18
2100	3.67e-18
2200	3.63e-18