condition	mean	min	max
4 h after light	4.573176666666667	4.51589	4.6192400000000005
8 h after light	4.60321	4.456230000000001	4.75769
12 h after light	4.51614	4.44396	4.58584
4 h after dark	4.5162466666666665	4.35811	4.70349
8 h after dark	4.456813333333334	4.400980000000001	4.51131
12 h after dark	4.570469999999999	4.42911	4.82206