condition mean min max 4 h after light 0.3663075 0.263155 0.46946 8 h after light 0.7005995 0.615227 0.785972 12 h after light 1.074705 1.04656 1.10285 4 h after dark 1.057066 0.870711 1.39603 8 h after dark 0.5162883333333333 0.383428 0.71998 12 h after dark 0.3756403333333333 0.325267 0.415224