condition	mean	min	max
0 h after light	2.530555	0.0	5.06111
4 h after light	13.9479	12.4527	15.4431
8 h after light	17.929585	7.57417	28.285
4 h after dark	2.485805	2.4809	2.49071
8 h after dark	8.737385	2.54767	14.9271
12 h after dark	1.233855	0.0	2.46771