condition mean min max ZT0-3 35.5246 23.69005 47.35915 ZT4-7 9.00093 9.00093 9.00093 ZT8-11 1.53075 1.53075 1.53075 ZT12-15 0 0 0 ZT16-19 5.09404 5.09404 5.09404 ZT20-23 13.8737 13.8737 13.8737