condition mean min max ZT0-3 4.56212 3.5077 5.6165400000000005 ZT4-7 11.986505000000001 11.986505000000001 11.986505000000001 ZT8-11 4.586315 4.586315 4.586315 ZT12-15 0 0 0 ZT16-19 5.713705 5.713705 5.713705 ZT20-23 4.00994 4.00994 4.00994