condition	mean	min	max
4 h after light	11.7559	11.5526	11.9592
8 h after light	12.38795	11.9707	12.8052
12 h after light	12.42275	12.2917	12.5538
4 h after dark	18.8338	16.4886	21.179
8 h after dark	16.77335	16.2828	17.2639
12 h after dark	15.0714	14.5258	15.617