condition mean min max ZT0-3 117.8991388425 91.886926585 143.9113511 ZT4-7 32.9711536175 30.463629415 35.47867782 ZT8-11 36.22440044 34.611785405 37.837015475 ZT12-15 13.96228384725 7.1578263475 20.766741347 ZT16-19 14.469800395 12.674016425 16.265584365 ZT20-23 17.0484548025 14.67750607 19.419403535