condition mean min max ZT0-3 1.27019 1.27019 1.27019 ZT4-7 0.543412 0.543412 0.543412 ZT8-11 0.8239989999999999 0.8239989999999999 0.8239989999999999 ZT12-15 1.0792125000000001 1.0792125000000001 1.0792125000000001 ZT16-19 1.52896 1.52896 1.52896 ZT20-23 1.0105625 1.0105625 1.0105625