condition mean min max 4 h after light 13.62585 11.9637 15.288 8 h after light 9.191035 9.14939 9.23268 12 h after light 13.819749999999999 13.245 14.3945 4 h after dark 15.47275 14.7593 16.1862 8 h after dark 14.180900000000001 13.7935 14.5683 12 h after dark 15.50475 15.3087 15.7008