printf, filenr printf, filenr, 'a_svd, siga_svd' printf, filenr, a_svd, siga_svd ;============= compare with a simple linear fit... polyfit, time, t, 1, a_polyfit, siga_polyfit, yfit, sigma, nr3bad, $ ncov_polyfit printf, filenr,'' printf, filenr, '1 deg polyfit:' printf, filenr, 'ncov_polyfit' printf, filenr, ncov_polyfit printf, filenr,'' printf, filenr, 'a_polyfit, siga_polyfit' printf, filenr, a_polyfit, siga_polyfit