I/F values Wavelength(nm) Observed Model 250.0 0.387±0.039 0.402 275.0 0.363±0.036 0.352 342.6 0.468±0.047 0.463 395.0 0.603±0.06 0.574 501.3 0.834±0.083 0.795 630.6 0.822±0.082 0.819 727.0 0.375±0.037 0.415 889.0 0.061±0.01 0.061 chi2 values Wavelength(nm) chi2 250.0 0.16 275.0 0.103 342.6 0.007 395.0 0.231 501.3 0.216 630.6 0.002 727.0 1.142 889.0 0.0