condition mean min max ZT0-3 0.72472159625 0.671528583 0.7779146094999999 ZT4-7 1.55035336675 1.3229089065 1.7777978269999999 ZT8-11 4.924732105 3.414392351 6.435071859000001 ZT12-15 6.89818533525 6.617473283000001 7.1788973875 ZT16-19 7.502427164999999 6.607000836999999 8.397853493 ZT20-23 9.561407963499999 9.087791657499999 10.0350242695