condition mean min max ZT0-3 44.8755 44.8755 44.8755 ZT4-7 31.801099999999998 31.801099999999998 31.801099999999998 ZT8-11 30.50025 30.50025 30.50025 ZT12-15 34.1303 34.1303 34.1303 ZT16-19 50.738299999999995 50.738299999999995 50.738299999999995 ZT20-23 50.861850000000004 50.861850000000004 50.861850000000004