condition mean min max 2 h after light 15.254358333333332 5.28904 33.3726 6 h after light 5.777028333333334 0.0 16.3911 10 h after light 5.422145 0.0 15.1492 14 h after light 8.034975 0.0 14.105 18 h after light 9.864171666666667 0.0 19.6253 2 h after dark 11.230238333333334 5.82707 19.4189