condition	mean	min	max
4 h after light	7.26025	6.11374	8.40676
8 h after light	6.17797	5.91144	6.4445
12 h after light	7.29308	6.92206	7.6641
4 h after dark	8.622225	7.97151	9.27294
8 h after dark	7.91236	7.8661	7.95862
12 h after dark	8.87683	8.4368	9.31686