condition mean min max ZT0-3 0.54646904225 0.39877364200000004 0.6941644425 ZT4-7 2.12552235975 1.3971057185 2.853939001 ZT8-11 3.52499180575 2.9375530855 4.112430526 ZT12-15 5.22354758725 3.952791032 6.4943041425 ZT16-19 5.24637212375 5.206119242 5.2866250054999995 ZT20-23 5.6684850332500005 5.153326488 6.1836435785