condition	mean	min	max
4 h after light	15.513976499999998	13.877542	17.150411
8 h after light	19.3294105	18.112676	20.546145
12 h after light	19.8832565	15.489247	24.277266
4 h after dark	18.9026835	14.968364	22.837003
8 h after dark	15.756450999999998	15.012858	16.500044
12 h after dark	15.151799	15.151799	15.151799