condition mean min max ZT0-3 0.006365699999999999 0.006365699999999999 0.006365699999999999 ZT4-7 0.0191005 0.0191005 0.0191005 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0064546000000000004 0.0064546000000000004 0.0064546000000000004 ZT20-23 0.08204143333333333 0.08204143333333333 0.08204143333333333