condition	mean	min	max
4 h after light	18.47214	8.452553	28.491727
8 h after light	13.895555	9.12303	18.66808
12 h after light	10.9852545	8.201852	13.768657
4 h after dark	7.5738225	7.517295	7.63035
8 h after dark	6.992998	6.842256	7.14374
12 h after dark	8.016595	8.016595	8.016595