condition mean min max ZT0-3 0.17225805475 0.077521337 0.2669947725 ZT4-7 2.085206215 1.201759755 2.9686526749999995 ZT8-11 5.5897332265 4.016417876 7.163048577 ZT12-15 8.74923423925 7.8540649479999995 9.6444035305 ZT16-19 8.467966338 7.9878681015 8.9480645745 ZT20-23 6.957839621 6.857141024500001 7.0585382175