condition	mean	min	max
0 h after light	26.40655	23.2854	29.5277
4 h after light	9.753235	8.46337	11.0431
8 h after light	8.075955	7.31283	8.83908
4 h after dark	5.50746	5.44474	5.57018
8 h after dark	6.51325	5.58577	7.44073
12 h after dark	12.3247	10.0691	14.5803