2, channel 2 SRF extracted from http://www.star.nesdis.noaa.gov/smcd/spb/fwu/homepage/AVHRR/spec_resp_func/webdata/AVHRR1_SRF_only.xls sheet A204C002; August 2014 Number of data points: 42 Wavenumber (cm-1) Filter response 9174.311927 0.001000 9259.259259 0.001000 9345.794393 0.002000 9433.962264 0.006000 9523.809524 0.013000 9615.384615 0.029000 9708.737864 0.065000 9803.921569 0.137000 9900.990099 0.282000 10000.000000 0.514000 10101.010101 0.678000 10204.081633 0.712000 10309.278351 0.692000 10416.666667 0.697000 10526.315790 0.728000 10638.297872 0.769000 10752.688172 0.833000 10869.565217 0.857000 10989.010989 0.854000 11111.111111 0.831000 11235.955056 0.814000 11363.636364 0.815000 11494.252874 0.823000 11627.906977 0.823000 11764.705882 0.825000 11904.761905 0.826000 12048.192771 0.800000 12195.121951 0.807000 12345.679012 0.851000 12500.000000 0.897000 12658.227848 0.954000 12820.512821 1.000000 12987.012987 0.992000 13157.894737 0.994000 13333.333333 0.967000 13513.513514 0.926000 13698.630137 0.825000 13888.888889 0.522000 14084.507042 0.169000 14285.714286 0.016000 14492.753623 0.009000 14705.882353 0.000000