condition	mean	min	max
4 h after light	8.121879999999999	7.95154	8.29115
8 h after light	8.10378	7.89429	8.39058
12 h after light	8.022093333333334	7.84415	8.1463
4 h after dark	8.107153333333333	7.82803	8.39575
8 h after dark	7.967953333333333	7.637169999999999	8.30995
12 h after dark	7.940606666666667	7.75576	8.11693