condition mean min max 4 h after light 0.3881493333333333 0.0 0.641771 8 h after light 0.19691216666666667 0.0325665 0.350341 12 h after light 0.320164 0.169436 0.460522 4 h after dark 0.519926 0.470481 0.585939 8 h after dark 0.600272 0.0 1.02356 12 h after dark 0.8407753333333333 0.812825 0.894116