condition mean min max ZT0-3 11.7173 11.463049999999999 11.97155 ZT4-7 4.855935000000001 4.855935000000001 4.855935000000001 ZT8-11 11.10425 11.10425 11.10425 ZT12-15 0 0 0 ZT16-19 12.4298 12.4298 12.4298 ZT20-23 10.721499999999999 10.721499999999999 10.721499999999999