condition mean min max 4 h after light 4.267063333333334 4.20303 4.34374 8 h after light 4.3149999999999995 4.23234 4.47007 12 h after light 4.2480166666666666 4.07054 4.5749699999999995 4 h after dark 4.1703399999999995 4.16732 4.173769999999999 8 h after dark 4.162053333333334 4.06133 4.24725 12 h after dark 4.160433333333334 4.01625 4.3276900000000005