condition	mean	min	max
4 h after light	9.832529999999998	9.44456	10.2205
8 h after light	8.183565	7.90135	8.46578
12 h after light	7.76471	7.57779	7.95163
4 h after dark	10.19176	9.85712	10.5264
8 h after dark	8.63739	8.11105	9.16373
12 h after dark	9.74078	9.05496	10.4266