condition mean min max ZT0-3 0.1662706315 0.049768779000000006 0.282772484 ZT4-7 0.2699764825 0.251005074 0.288947891 ZT8-11 0.2520324005 0.20018337549999998 0.30388142549999997 ZT12-15 0.08176328499999999 0.013779203 0.149747367 ZT16-19 0.00288659875 0.0 0.0057731975 ZT20-23 0.0061916195 0.0 0.012383239