condition mean min max 4 h after light 10.17221 9.49462 10.8498 8 h after light 8.06316 7.61295 8.51337 12 h after light 9.45367 9.24229 9.66505 4 h after dark 10.280876666666666 9.62463 10.6264 8 h after dark 10.5039 10.0459 10.7788 12 h after dark 10.559146666666667 9.97604 11.1735