condition mean min max ZT0-3 190.18111109999998 190.18111109999998 190.18111109999998 ZT4-7 119.82388888999999 119.82388888999999 119.82388888999999 ZT8-11 127.4711111 127.4711111 127.4711111 ZT12-15 146.3588889 146.3588889 146.3588889 ZT16-19 224.6788889 224.6788889 224.6788889 ZT20-23 209.76888886666666 209.76888886666666 209.76888886666666