condition mean min max ZT0-3 194.60000000000002 194.60000000000002 194.60000000000002 ZT4-7 164.4 164.4 164.4 ZT8-11 194.15 194.15 194.15 ZT12-15 145.2 145.2 145.2 ZT16-19 186.64999999999998 186.64999999999998 186.64999999999998 ZT20-23 239.7 239.7 239.7