condition	mean	min	max
4 h after light	11.53865	10.5571	12.5202
8 h after light	15.7412	15.6672	15.8152
12 h after light	19.602800000000002	18.4445	20.7611
4 h after dark	20.78105	20.2893	21.2728
8 h after dark	16.40825	15.551	17.2655
12 h after dark	15.87665	15.4143	16.339