condition mean min max 0 h after light 9.50124 9.43549 9.56699 2 h after light 7.910769999999999 7.1991 8.62244 4 h after light 7.8570150000000005 7.74331 7.97072 8 h after light 8.029385 7.9881 8.07067 12 h after light 8.735945000000001 8.70522 8.76667 2 h after dark 10.4667 10.3158 10.6176 4 h after dark 9.350670000000001 9.016 9.68534 8 h after dark 8.95918 7.67586 10.2425 12 h after dark 10.257684999999999 9.25207 11.2633