condition	mean	min	max
4 h after light	7.954813333333333	7.606889999999999	8.13903
8 h after light	7.83573	7.801089999999999	7.86375
12 h after light	8.13694	8.06983	8.21297
4 h after dark	8.316123333333334	8.12273	8.45772
8 h after dark	8.599973333333333	8.453439999999999	8.746
12 h after dark	8.68983	8.60267	8.79872