condition	mean	min	max
4 h after light	4.295	4.279319999999999	4.32254
8 h after light	4.320413333333334	4.28524	4.38818
12 h after light	4.2182466666666665	4.1146	4.35607
4 h after dark	4.362749999999999	4.307119999999999	4.42052
8 h after dark	4.420303333333334	4.2207300000000005	4.56393
12 h after dark	4.24777	4.20085	4.27194