condition mean min max 4 h after light 9.707831 9.707831 9.707831 8 h after light 10.250852 9.954386 10.547318 12 h after light 10.724161500000001 10.587593 10.86073 4 h after dark 9.694224 9.627245 9.761203 8 h after dark 9.366783 9.129342 9.604224 12 h after dark 9.103974 9.103974 9.103974