condition mean min max 4 h after light 9.418984 8.458814 10.325330000000001 8 h after light 6.1304229999999995 4.48259 8.97917 12 h after light 9.153473333333332 3.02577 12.68206 16 h after light 16.731613333333335 14.67637 20.05534 4 h after dark 12.237996666666666 11.56739 13.39766 8 h after dark 6.760754333333334 5.01841 8.136137