condition mean min max ZT0-3 225.85 225.85 225.85 ZT4-7 345.3 345.3 345.3 ZT8-11 410.65 410.65 410.65 ZT12-15 385.85 385.85 385.85 ZT16-19 282.20000000000005 282.20000000000005 282.20000000000005 ZT20-23 210.85 210.85 210.85