condition mean min max ZT0-3 177.445 177.445 177.445 ZT4-7 61.0171 61.0171 61.0171 ZT8-11 44.3266 44.3266 44.3266 ZT12-15 116.794 116.794 116.794 ZT16-19 176.15300000000002 176.15300000000002 176.15300000000002 ZT20-23 299.661 299.661 299.661