condition mean min max ZT0-3 0.7349107248233333 0.7349107248233333 0.7349107248233333 ZT4-7 0.7546710000000001 0.7546710000000001 0.7546710000000001 ZT8-11 1.1109879999999999 1.1109879999999999 1.1109879999999999 ZT12-15 0.6512801300000001 0.6512801300000001 0.6512801300000001 ZT16-19 1.162482542 1.162482542 1.162482542 ZT20-23 2.345536666666667 2.345536666666667 2.345536666666667