condition mean min max 4 h after light 2.77245 2.64521 2.89969 8 h after light 2.90547 2.6126 3.19834 12 h after light 3.7538650000000002 3.5398 3.96793 4 h after dark 6.851725 6.01213 7.69132 8 h after dark 6.29314 6.09269 6.49359 12 h after dark 4.259815 4.09083 4.4288