condition	mean	min	max
4 h after light	4.324213333333334	4.30241	4.34208
8 h after light	4.34767	4.2045	4.48919
12 h after light	4.28933	4.12252	4.43165
4 h after dark	4.24359	4.22417	4.26644
8 h after dark	4.195943333333333	4.06071	4.2908
12 h after dark	4.346613333333333	4.19083	4.57586