condition mean min max ZT0-3 94.466496 94.466496 94.466496 ZT4-7 87.76932199999999 87.76932199999999 87.76932199999999 ZT8-11 84.35990799999999 84.35990799999999 84.35990799999999 ZT12-15 98.17457250000001 98.17457250000001 98.17457250000001 ZT16-19 98.233452 98.233452 98.233452 ZT20-23 97.8699655 97.8699655 97.8699655