condition mean min max 4 h after light 0.8149375 0.471535 1.15834 8 h after light 1.0538665 0.721913 1.38582 12 h after light 1.045696 0.974592 1.1168 4 h after dark 2.038995 1.35508 2.72291 8 h after dark 1.14668 1.06845 1.22491 12 h after dark 0.736977 0.684358 0.789596