condition	mean	min	max
4 h after light	7.8469	7.713769999999999	8.05305
8 h after light	7.821423333333334	7.569189999999999	8.029110000000001
12 h after light	7.94753	7.652830000000001	8.12969
4 h after dark	7.640063333333333	7.34277	7.84437
8 h after dark	7.570093333333333	7.407260000000001	7.71974
12 h after dark	7.569983333333334	7.498530000000001	7.657830000000001