condition	mean	min	max
0 h after light	20.20965	17.5913	22.828
4 h after light	11.6486	10.7726	12.5246
8 h after light	7.93496	7.52826	8.34166
4 h after dark	11.6175	10.9226	12.3124
8 h after dark	15.727450000000001	15.565	15.8899
12 h after dark	17.0531	16.9518	17.1544