condition mean min max 4 h after light 68.98465 66.0077 71.9616 8 h after light 42.59015 41.2167 43.9636 12 h after light 31.0977 29.2305 32.9649 4 h after dark 30.445133333333334 29.8411 31.6007 8 h after dark 34.6709 32.4477 36.4177 12 h after dark 47.8239 44.6854 49.6307