condition mean min max ZT0-3 0.04779876875 0.0 0.0955975375 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.125850553 0.037971755499999996 0.2137293505 ZT16-19 0.0 0.0 0.0 ZT20-23 0.04699262625 0.0346341835 0.059351069000000006