condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.040964 0.0 0.122892 12 h after light 0.09804016666666666 0.0 0.21335 4 h after dark 0.133674 0.0 0.401022 8 h after dark 0.06281276666666667 0.0 0.0991433 12 h after dark 0.08496933333333334 0.0 0.150213