condition mean min max ZT0-3 93.41655 60.3076 126.5255 ZT4-7 2.489 2.489 2.489 ZT8-11 2.153425 2.153425 2.153425 ZT12-15 0 0 0 ZT16-19 4.654075 4.654075 4.654075 ZT20-23 5.637790000000001 5.637790000000001 5.637790000000001