condition mean min max ZT0-3 121.001288 121.001288 121.001288 ZT4-7 66.0256925 66.0256925 66.0256925 ZT8-11 68.047294 68.047294 68.047294 ZT12-15 107.1476065 107.1476065 107.1476065 ZT16-19 102.0955715 102.0955715 102.0955715 ZT20-23 83.4288975 83.4288975 83.4288975