condition mean min max ZT0-3 0.0433213245 0.0 0.086642649 ZT4-7 0.13015426425 0.0 0.2603085285 ZT8-11 0.14101017875 0.0 0.2820203575 ZT12-15 2.48834002175 2.0009582445 2.9757217990000004 ZT16-19 1.1253207135 0.6947337265 1.5559077005000002 ZT20-23 0.31684568874999997 0.294213724 0.3394776535