condition mean min max 4 h after light 3.640763333333333 3.5526 3.811952 8 h after light 2.5726483333333334 1.681628 3.1629150000000004 12 h after light 1.869976 1.487994 2.226685 16 h after light 3.5500523333333334 3.294019 3.9983419999999996 4 h after dark 2.9370279999999998 2.654215 3.3737519999999996 8 h after dark 1.8734516666666665 1.667892 2.038779