condition mean min max ZT0-3 3.7284 3.4261749999999997 4.030625000000001 ZT4-7 9.524384999999999 9.524384999999999 9.524384999999999 ZT8-11 14.0007 14.0007 14.0007 ZT12-15 0 0 0 ZT16-19 12.48545 12.48545 12.48545 ZT20-23 7.84936 7.84936 7.84936