condition	mean	min	max
4 h after light	5.957409999999999	5.78105	6.18042
8 h after light	5.932083333333334	5.83577	6.0121400000000005
12 h after light	5.73691	5.67319	5.84352
4 h after dark	5.791156666666667	5.74219	5.83221
8 h after dark	5.668276666666666	5.568890000000001	5.75341
12 h after dark	5.80014	5.72971	5.91542