condition mean min max ZT0-3 156.4673 43.2596 269.675 ZT4-7 20.0903 20.0903 20.0903 ZT8-11 13.7455 13.7455 13.7455 ZT12-15 40.635775 19.2316 62.039950000000005 ZT16-19 82.8417 41.0514 124.63199999999999 ZT20-23 0 0 0