condition	mean	min	max
4 h after light	6.56696	6.13076	7.00316
8 h after light	3.8117349999999997	3.56866	4.05481
12 h after light	6.091145	5.24921	6.93308
4 h after dark	14.5612	12.6764	16.446
8 h after dark	14.38415	12.5929	16.1754
12 h after dark	11.905574999999999	9.68595	14.1252