condition mean min max 4 h after light 12.72065 11.4224 14.0189 8 h after light 11.215150000000001 11.1628 11.2675 12 h after light 15.76835 15.7378 15.7989 4 h after dark 17.6751 17.3423 18.2179 8 h after dark 18.418833333333335 17.6582 18.9008 12 h after dark 14.735766666666667 14.1848 15.2693