condition mean min max 2 h after light 1.205296 0.551863 2.10304 6 h after light 1.43501 1.00528 2.21472 10 h after light 1.4317105 0.2059 4.86146 14 h after light 1.3953163333333334 0.581775 2.3005 18 h after light 1.310587 0.639976 2.40754 2 h after dark 2.0170618333333334 0.174981 4.23775