condition mean min max ZT0-3 15.276120729499999 7.760968349 22.79127311 ZT4-7 13.28278110475 6.5669347045 19.998627505 ZT8-11 37.8719299225 37.412561485 38.33129836 ZT12-15 43.4892951175 40.831578379999996 46.147011855 ZT16-19 31.497258900000002 25.98633007 37.00818773 ZT20-23 13.73186014025 8.623857150500001 18.839863129999998