condition mean min max ZT0-3 46.5292 46.5292 46.5292 ZT4-7 24.86995 24.86995 24.86995 ZT8-11 19.1984 19.1984 19.1984 ZT12-15 26.717550000000003 26.717550000000003 26.717550000000003 ZT16-19 39.45935 39.45935 39.45935 ZT20-23 45.810199999999995 45.810199999999995 45.810199999999995