condition mean min max ZT0-3 1394.9 1394.9 1394.9 ZT4-7 1379.4 1379.4 1379.4 ZT8-11 1357.8000000000002 1357.8000000000002 1357.8000000000002 ZT12-15 1342.4 1342.4 1342.4 ZT16-19 1498.3 1498.3 1498.3 ZT20-23 1358.4499999999998 1358.4499999999998 1358.4499999999998