condition	mean	min	max
4 h after light	7.701773333333333	7.6281	7.759519999999999
8 h after light	7.72069	7.59362	7.803710000000001
12 h after light	7.561656666666667	7.314660000000001	7.77345
4 h after dark	7.721636666666666	7.40959	7.9228
8 h after dark	7.722659999999999	7.6272899999999995	7.8504
12 h after dark	7.874286666666666	7.74595	8.03434