condition mean min max 4 h after light 4.59004 4.43549 4.74459 8 h after light 4.86665 4.67006 5.06324 12 h after light 27.2801 26.0421 28.5181 4 h after dark 38.58 36.2268 40.9332 8 h after dark 17.9282 16.417 19.4394 12 h after dark 8.544445 7.76336 9.32553