condition mean min max ZT0-3 0.77886116325 0.683163715 0.8745586114999999 ZT4-7 0.5198491057500001 0.5139380365 0.525760175 ZT8-11 0.39781253325 0.370197376 0.4254276905 ZT12-15 3.1975698125000003 1.452495523 4.942644102 ZT16-19 9.506521269 6.0331188295 12.9799237085 ZT20-23 29.445714655 18.258851485 40.632577825