condition mean min max 4 h after light 0.8848739999999999 0.798511 0.971237 8 h after light 1.655775 1.62112 1.69043 12 h after light 1.685805 1.47831 1.8933 4 h after dark 2.912875 2.3504 3.47535 8 h after dark 2.1730400000000003 2.14676 2.19932 12 h after dark 1.62476 1.47279 1.77673