condition mean min max 3 h after light 5.97427 4.77572 7.87879 6 h after light 5.570556666666667 5.28663 6.0772 9 h after light 10.618993333333334 9.57928 11.4305 12 h after light 20.35545 16.9426 22.4099 3 h after dark 35.176500000000004 29.9417 44.1022 6 h after dark 45.8724 43.4018 47.2273 9 h after dark 36.9705 34.8323 40.8695 12 h after dark 17.391 17.2783 17.5037