condition mean min max 4 h after light 3.657573333333333 3.64731 3.6713 8 h after light 3.6458233333333334 3.63182 3.66278 12 h after light 3.7143966666666666 3.6509699999999996 3.75841 4 h after dark 3.72117 3.64689 3.7848699999999997 8 h after dark 3.68247 3.6112 3.7564699999999998 12 h after dark 3.68185 3.6548199999999995 3.7244099999999998