condition mean min max ZT0-3 124.693595 124.693595 124.693595 ZT4-7 92.9151305 92.9151305 92.9151305 ZT8-11 116.53118549999999 116.53118549999999 116.53118549999999 ZT12-15 119.37334849999999 119.37334849999999 119.37334849999999 ZT16-19 145.139782 145.139782 145.139782 ZT20-23 158.9345725 158.9345725 158.9345725