condition mean min max ZT0-3 126.112137 126.112137 126.112137 ZT4-7 125.65306050000001 125.65306050000001 125.65306050000001 ZT8-11 135.56995949999998 135.56995949999998 135.56995949999998 ZT12-15 136.2082575 136.2082575 136.2082575 ZT16-19 146.736952 146.736952 146.736952 ZT20-23 135.8017225 135.8017225 135.8017225