condition mean min max ZT0-3 1.2929175 1.17489 1.410945 ZT4-7 1.051905 1.051905 1.051905 ZT8-11 1.2689650000000001 1.2689650000000001 1.2689650000000001 ZT12-15 0 0 0 ZT16-19 0.5742205 0.5742205 0.5742205 ZT20-23 1.009455 1.009455 1.009455