condition	mean	min	max
4 h after light	21.6961	18.8071	24.5851
8 h after light	24.31395	23.8136	24.8143
12 h after light	17.42875	16.9203	17.9372
4 h after dark	22.41455	19.8835	24.9456
8 h after dark	17.131050000000002	16.3441	17.918
12 h after dark	18.5282	17.1714	19.885