condition mean min max 0 h after light 3.8346850000000003 3.75991 3.90946 2 h after light 4.43283 4.10059 4.76507 4 h after light 4.0872399999999995 3.94473 4.22975 8 h after light 3.9689699999999997 3.77877 4.15917 12 h after light 6.180429999999999 5.69224 6.66862 2 h after dark 6.735015000000001 6.45537 7.01466 4 h after dark 4.04757 3.78565 4.30949 8 h after dark 4.67424 4.5484 4.80008 12 h after dark 4.344545 4.00733 4.68176