condition	mean	min	max
0 h after light	7.93641	7.90171	7.97111
4 h after light	14.2725	11.5083	17.0367
8 h after light	7.51568	6.44937	8.58199
4 h after dark	16.71555	14.3525	19.0786
8 h after dark	19.25375	17.5628	20.9447
12 h after dark	10.781155	8.21311	13.3492