condition mean min max 4 h after light 31.394350000000003 30.1981 32.5906 8 h after light 30.93965 30.4963 31.383 12 h after light 31.33825 30.0828 32.5937 4 h after dark 33.6847 32.6977 34.4413 8 h after dark 32.5969 32.1242 33.3074 12 h after dark 32.1831 31.1997 33.0446