condition mean min max ZT0-3 0.63799175 0.6196455 0.656338 ZT4-7 0.380172 0.380172 0.380172 ZT8-11 0.553336 0.553336 0.553336 ZT12-15 0 0 0 ZT16-19 0.761946 0.761946 0.761946 ZT20-23 0.43728449999999996 0.43728449999999996 0.43728449999999996