condition mean min max ZT0-3 205.391 205.391 205.391 ZT4-7 181.70600000000002 181.70600000000002 181.70600000000002 ZT8-11 214.8305 214.8305 214.8305 ZT12-15 152.554 152.554 152.554 ZT16-19 264.19100000000003 264.19100000000003 264.19100000000003 ZT20-23 218.339 218.339 218.339