condition mean min max ZT0-3 102.159841 102.159841 102.159841 ZT4-7 214.59680150000003 214.59680150000003 214.59680150000003 ZT8-11 116.902897 116.902897 116.902897 ZT12-15 114.34991450000001 114.34991450000001 114.34991450000001 ZT16-19 109.93970949999999 109.93970949999999 109.93970949999999 ZT20-23 75.9363425 75.9363425 75.9363425