condition mean min max ZT0-3 107.67222224333334 107.67222224333334 107.67222224333334 ZT4-7 135.50999999 135.50999999 135.50999999 ZT8-11 133.54000001 133.54000001 133.54000001 ZT12-15 121.0411111 121.0411111 121.0411111 ZT16-19 137.29888889 137.29888889 137.29888889 ZT20-23 119.70888889999999 119.70888889999999 119.70888889999999