condition mean min max ZT0-3 1090.49119 1090.49119 1090.49119 ZT4-7 850.1434079999999 850.1434079999999 850.1434079999999 ZT8-11 1032.730412 1032.730412 1032.730412 ZT12-15 1498.5121720000002 1498.5121720000002 1498.5121720000002 ZT16-19 1308.9410355 1308.9410355 1308.9410355 ZT20-23 1897.987824 1897.987824 1897.987824