condition mean min max ZT0-3 1769.835 1654.21 1885.46 ZT4-7 1534.225 1534.225 1534.225 ZT8-11 1064.93 1064.93 1064.93 ZT12-15 0 0 0 ZT16-19 801.8845 801.8845 801.8845 ZT20-23 1375.6799999999998 1375.6799999999998 1375.6799999999998