condition mean min max 4 h after light 31.3072 29.4649 33.1495 8 h after light 35.3639 33.9958 36.732 12 h after light 38.4405 37.6851 39.1959 4 h after dark 45.86515 44.9785 46.7518 8 h after dark 38.9084 38.5643 39.2525 12 h after dark 37.03055 36.3246 37.7365