condition mean min max ZT0-3 0.06841699775 0.049587896 0.0872460995 ZT4-7 0.22070042075 0.18188567449999998 0.259515167 ZT8-11 0.20680485124999998 0.186710556 0.22689914649999998 ZT12-15 4.04553643725 2.041417091 6.0496557835 ZT16-19 3.604201845 3.1350685274999996 4.0733351625 ZT20-23 3.107217995 3.0020816939999997 3.212354296