condition mean min max ZT0-3 97.938205 97.938205 97.938205 ZT4-7 96.76950049999999 96.76950049999999 96.76950049999999 ZT8-11 133.6546845 133.6546845 133.6546845 ZT12-15 89.463431 89.463431 89.463431 ZT16-19 105.5484555 105.5484555 105.5484555 ZT20-23 92.8470035 92.8470035 92.8470035