condition	mean	min	max
0 h after light	8.80292	8.65899	8.94685
4 h after light	8.373405	7.93966	8.80715
8 h after light	10.563945	9.76339	11.3645
4 h after dark	13.37305	12.7466	13.9995
8 h after dark	10.76375	10.0437	11.4838
12 h after dark	9.06592	8.62911	9.50273