condition mean min max 4 h after light 1.023965 0.898919 1.22101 8 h after light 0.22361723333333333 0.0261587 0.422111 12 h after light 0.357441 0.213867 0.488547 4 h after dark 0.6437120000000001 0.194664 0.918292 8 h after dark 1.7337773333333333 0.624322 2.40258 12 h after dark 2.40434 1.79803 3.09319