condition mean min max 3 h after light 0.997048 0.941774 1.0358 6 h after light 1.4540916666666668 0.781895 2.24121 9 h after light 1.1358123333333334 0.733607 1.59187 12 h after light 1.3759425 1.1057 1.77403 3 h after dark 1.0174066666666668 0.761874 1.52367 6 h after dark 1.002962 0.789816 1.30815 9 h after dark 1.110242 0.78356 1.5758 12 h after dark 1.0821939999999999 0.754478 1.40991