In the fol	"lowing, th"	e temperat	ure dependence of Acetone
photolysis	cross-sec	tion has b	een fit to a second order
polynomial	.  The par	ameterizat	ion is given by:

X-section	(cm(2)) =	CROSS298*(	1.+COEFF1*(298-T)+COEFF2*(298-T)^2)
where T is	in degree	s Kelvin	

The temper	ature depe	ndence was	measured from 298 to 235 K.
Jim Burkho	lder recom	mends usin	g the 235K X-sections for
temperatur	es lower t	han 235K.	

Wavelen_nm	CROSS298	COEFF1	COEFF2
2.15E+02	1.67E-21	8.42E-04	-2.75E-06
2.16E+02	1.80E-21	6.64E-04	-2.20E-06
2.17E+02	1.96E-21	4.05E-04	-2.20E-06
2.18E+02	2.12E-21	3.84E-04	-1.29E-06
2.19E+02	2.28E-21	3.79E-04	-1.22E-06
2.20E+02	2.46E-21	3.79E-04	-1.22E-06
2.21E+02	2.70E-21	2.99E-04	-1.02E-06
2.22E+02	2.94E-21	3.06E-04	-1.05E-06
2.23E+02	3.18E-21	2.73E-04	-8.94E-07
2.24E+02	3.46E-21	2.02E-04	-6.70E-07
2.25E+02	3.80E-21	1.53E-04	-5.23E-07
2.26E+02	4.19E-21	1.52E-04	-5.21E-07
2.27E+02	4.56E-21	1.73E-04	-5.89E-07
2.28E+02	4.92E-21	1.74E-04	-5.90E-07
2.29E+02	5.35E-21	1.64E-04	-6.07E-07
2.30E+02	5.84E-21	1.28E-04	-4.47E-07
2.31E+02	6.37E-21	1.45E-04	-5.01E-07
2.32E+02	6.93E-21	1.52E-04	-5.21E-07
2.33E+02	7.50E-21	1.63E-04	-5.55E-07
2.34E+02	8.15E-21	1.63E-04	-5.56E-07
2.35E+02	8.85E-21	2.14E-04	-7.68E-07
2.36E+02	9.56E-21	1.70E-04	-5.81E-07
2.37E+02	1.03E-20	6.77E-05	-2.56E-07
2.38E+02	1.11E-20	2.14E-04	-7.72E-07
2.39E+02	1.21E-20	6.42E-05	-2.46E-07
2.40E+02	1.30E-20	7.48E-05	-2.80E-07
2.41E+02	1.40E-20	7.49E-05	-2.80E-07
2.42E+02	1.50E-20	7.49E-05	-2.80E-07
2.43E+02	1.60E-20	8.19E-05	-3.03E-07
2.44E+02	1.72E-20	7.15E-05	-2.70E-07
2.45E+02	1.83E-20	7.83E-05	-2.93E-07
2.46E+02	1.95E-20	6.78E-05	-2.59E-07
2.47E+02	2.07E-20	6.76E-05	-2.59E-07
2.48E+02	2.20E-20	6.41E-05	-2.48E-07
2.49E+02	2.33E-20	6.07E-05	-2.38E-07
2.50E+02	2.47E-20	6.13E-05	-2.46E-07
2.51E+02	2.60E-20	6.52E-05	-2.64E-07
2.52E+02	2.74E-20	5.45E-05	-2.29E-07
2.53E+02	2.87E-20	-9.12E-05	2.78E-07
2.54E+02	3.01E-20	-9.12E-05	2.78E-07
2.55E+02	3.15E-20	-9.48E-05	2.89E-07
2.56E+02	3.30E-20	-9.07E-05	2.71E-07
2.57E+02	3.44E-20	-1.02E-04	3.06E-07
2.58E+02	3.57E-20	-1.22E-04	3.71E-07
2.59E+02	3.69E-20	-1.81E-04	5.69E-07
2.60E+02	3.81E-20	-2.02E-04	6.35E-07
2.61E+02	3.94E-20	-2.19E-04	6.94E-07
2.62E+02	4.07E-20	-2.19E-04	6.94E-07
2.63E+02	4.20E-20	-2.26E-04	7.18E-07
2.64E+02	4.32E-20	-2.53E-04	8.09E-07
2.65E+02	4.41E-20	-3.34E-04	1.08E-06
2.66E+02	4.49E-20	-3.93E-04	1.28E-06
2.67E+02	4.56E-20	-4.48E-04	1.47E-06
2.68E+02	4.64E-20	-4.73E-04	1.55E-06
2.69E+02	4.72E-20	-4.73E-04	1.55E-06
2.70E+02	4.79E-20	-4.72E-04	1.54E-06
2.71E+02	4.87E-20	-4.76E-04	1.55E-06
2.72E+02	4.91E-20	-5.52E-04	1.81E-06
2.73E+02	4.94E-20	-6.39E-04	2.11E-06
2.74E+02	4.94E-20	-7.36E-04	2.44E-06
2.75E+02	4.94E-20	-7.75E-04	2.57E-06
2.76E+02	4.93E-20	-8.26E-04	2.74E-06
2.77E+02	4.92E-20	-8.20E-04	2.72E-06
2.78E+02	4.94E-20	-7.99E-04	2.64E-06
2.79E+02	4.92E-20	-8.55E-04	2.83E-06
2.80E+02	4.91E-20	-8.79E-04	2.91E-06
2.81E+02	4.86E-20	-9.79E-04	3.26E-06
2.82E+02	4.79E-20	-1.06E-03	3.53E-06
2.83E+02	4.71E-20	-1.15E-03	3.83E-06
2.84E+02	4.62E-20	-1.23E-03	4.10E-06
2.85E+02	4.54E-20	-1.24E-03	4.15E-06
2.86E+02	4.44E-20	-1.30E-03	4.34E-06
2.87E+02	4.36E-20	-1.30E-03	4.32E-06
2.88E+02	4.28E-20	-1.32E-03	4.40E-06
2.89E+02	4.15E-20	-1.42E-03	4.75E-06
2.90E+02	4.06E-20	-1.46E-03	4.89E-06
2.91E+02	3.95E-20	-1.57E-03	5.24E-06
2.92E+02	3.82E-20	-1.64E-03	5.47E-06
2.93E+02	3.71E-20	-1.63E-03	5.44E-06
2.94E+02	3.57E-20	-1.73E-03	5.81E-06
2.95E+02	3.42E-20	-1.80E-03	6.03E-06
2.96E+02	3.26E-20	-1.87E-03	6.26E-06
2.97E+02	3.11E-20	-2.01E-03	6.74E-06
2.98E+02	2.98E-20	-2.09E-03	7.01E-06
2.99E+02	2.82E-20	-2.23E-03	7.47E-06
3.00E+02	2.67E-20	-2.33E-03	7.80E-06
3.01E+02	2.58E-20	-2.26E-03	7.57E-06
3.02E+02	2.45E-20	-2.34E-03	7.86E-06
3.03E+02	2.30E-20	-2.39E-03	8.01E-06
3.04E+02	2.18E-20	-2.32E-03	7.78E-06
3.05E+02	2.05E-20	-2.42E-03	8.12E-06
3.06E+02	1.89E-20	-2.60E-03	8.72E-06
3.07E+02	1.75E-20	-2.71E-03	9.08E-06
3.08E+02	1.61E-20	-3.04E-03	1.02E-05
3.09E+02	1.49E-20	-3.20E-03	1.08E-05
3.10E+02	1.36E-20	-3.40E-03	1.14E-05
3.11E+02	1.24E-20	-3.57E-03	1.20E-05
3.12E+02	1.14E-20	-3.57E-03	1.20E-05
3.13E+02	1.06E-20	-3.58E-03	1.20E-05
3.14E+02	9.44E-21	-3.82E-03	1.29E-05
3.15E+02	8.37E-21	-3.95E-03	1.33E-05
3.16E+02	7.60E-21	-3.92E-03	1.31E-05
3.17E+02	6.84E-21	-4.14E-03	1.39E-05
3.18E+02	5.98E-21	-4.45E-03	1.49E-05
3.19E+02	5.23E-21	-4.63E-03	1.55E-05
3.20E+02	4.55E-21	-5.19E-03	1.74E-05
3.21E+02	4.11E-21	-5.90E-03	1.97E-05
3.22E+02	3.48E-21	-6.29E-03	2.11E-05
3.23E+02	2.94E-21	-6.93E-03	2.32E-05
3.24E+02	2.48E-21	-7.23E-03	2.42E-05
3.25E+02	2.10E-21	-8.27E-03	2.77E-05
3.26E+02	1.74E-21	-9.07E-03	3.03E-05
3.27E+02	1.41E-21	-8.75E-03	2.94E-05
3.28E+02	1.13E-21	-9.47E-03	3.17E-05
3.29E+02	9.13E-22	-1.03E-02	3.45E-05
3.30E+02	7.40E-22	-1.08E-02	3.61E-05
3.31E+02	5.86E-22	-1.03E-02	3.45E-05
3.32E+02	4.65E-22	-1.08E-02	3.62E-05
3.33E+02	3.75E-22	-1.11E-02	3.71E-05
3.34E+02	3.11E-22	-1.12E-02	3.74E-05
3.35E+02	2.48E-22	-1.04E-02	3.47E-05
3.36E+02	1.99E-22	-1.04E-02	3.47E-05
3.37E+02	1.62E-22	-9.66E-03	3.21E-05
3.38E+02	1.35E-22	-9.45E-03	3.14E-05
3.39E+02	1.13E-22	-9.22E-03	3.05E-05
3.40E+02	9.12E-23	-9.30E-03	3.07E-05
3.41E+02	7.29E-23	-9.45E-03	3.12E-05
3.42E+02	5.83E-23	-9.41E-03	3.14E-05
3.43E+02	4.94E-23	-1.06E-02	3.48E-05
3.44E+02	3.65E-23	-9.62E-03	3.20E-05
3.45E+02	3.01E-23	-1.14E-02	3.78E-05
3.46E+02	2.35E-23	-9.16E-03	3.01E-05
3.47E+02	1.58E-23	-7.29E-03	2.51E-05
3.48E+02	1.11E-23	-1.03E-02	3.44E-05
3.49E+02	1.07E-23	-6.06E-03	1.98E-05