condition mean min max 4 h after light 7.423080000000001 6.97727 7.86889 8 h after light 4.524430000000001 4.31404 4.73482 12 h after light 4.76957 4.55978 4.97936 4 h after dark 6.14102 5.69776 6.36376 8 h after dark 7.579383333333333 6.92062 8.0289 12 h after dark 6.410950000000001 5.63471 7.15821