condition mean min max 4 h after light 34.40335 30.6729 38.1338 8 h after light 29.057 26.8801 31.2339 12 h after light 36.731049999999996 35.2582 38.2039 4 h after dark 57.83156666666667 53.9161 60.6709 8 h after dark 69.51506666666667 68.1755 70.951 12 h after dark 48.1876 42.2318 53.4183