condition mean min max ZT0-3 0.3371202395 0.290372765 0.38386771399999997 ZT4-7 0.043646251250000004 0.023158042500000003 0.06413446 ZT8-11 4.2111542555 0.40016286149999997 8.0221456495 ZT12-15 12.10090149875 10.770977725 13.4308252725 ZT16-19 6.369932513 5.2364732965 7.5033917295 ZT20-23 1.47351555375 0.8897080715000001 2.057323036