condition mean min max ZT0-3 0.2632172615 0.166025706 0.360408817 ZT4-7 0.49769932575 0.4424821845 0.552916467 ZT8-11 0.48379516925 0.4046245705 0.562965768 ZT12-15 0.6683466255 0.557996986 0.778696265 ZT16-19 0.5709021255 0.4424676555 0.6993365954999999 ZT20-23 1.24628392925 0.922256226 1.5703116325