condition mean min max ZT0-3 1716.9 1716.9 1716.9 ZT4-7 1495.8 1495.8 1495.8 ZT8-11 1387.4499999999998 1387.4499999999998 1387.4499999999998 ZT12-15 1210.3 1210.3 1210.3 ZT16-19 1422.4499999999998 1422.4499999999998 1422.4499999999998 ZT20-23 1567.4 1567.4 1567.4