condition mean min max ZT0-3 1338.4499999999998 1338.4499999999998 1338.4499999999998 ZT4-7 1023.3 1023.3 1023.3 ZT8-11 1037.3 1037.3 1037.3 ZT12-15 951.4 951.4 951.4 ZT16-19 1238.9 1238.9 1238.9 ZT20-23 1328.3 1328.3 1328.3