condition mean min max ZT0-3 1.0678990000000002 0.703358 1.4324400000000002 ZT4-7 1.55255 1.55255 1.55255 ZT8-11 6.355535 6.355535 6.355535 ZT12-15 0 0 0 ZT16-19 5.48499 5.48499 5.48499 ZT20-23 2.407395 2.407395 2.407395