condition mean min max ZT0-3 0.29719425075 0.143259431 0.4511290705 ZT4-7 1.2966819395 0.609835295 1.9835285839999999 ZT8-11 9.57032803825 5.212939485 13.927716591500001 ZT12-15 18.044941221000002 14.11677615 21.973106292 ZT16-19 5.905248565 5.2796856355 6.5308114945 ZT20-23 7.18446376925 6.275506934 8.0934206045