condition	mean	min	max
0 h after light	19.9696	18.5023	21.4369
4 h after light	16.00395	15.4454	16.5625
8 h after light	11.6856	8.8252	14.546
4 h after dark	16.3969	15.7858	17.008
8 h after dark	15.64735	15.2517	16.043
12 h after dark	15.76685	14.0307	17.503