condition	mean	min	max
4 h after light	17.6599	15.7325	19.5873
8 h after light	18.83265	18.3715	19.2938
12 h after light	27.855	22.8318	32.8782
4 h after dark	36.00223333333333	31.8172	40.7889
8 h after dark	45.7554	42.5806	48.8448
12 h after dark	39.87603333333333	32.4497	50.5591