condition mean min max 0 h after light 0.862329 0.799969 0.924689 4 h after light 0.7453044999999999 0.424699 1.06591 8 h after light 0.46452150000000003 0.365283 0.56376 4 h after dark 1.059785 1.02742 1.09215 8 h after dark 1.063657 0.733394 1.39392 12 h after dark 1.30519 1.16762 1.44276