condition mean min max 4 h after light 16.48761 6.41563 24.6811 8 h after light 17.53916 3.88268 28.6009 12 h after light 20.7316 13.4856 30.1755 4 h after dark 30.147966666666665 20.9792 38.1127 8 h after dark 27.058 12.9167 37.791 12 h after dark 24.103066666666667 19.9894 27.1371