condition mean min max ZT0-3 648.2004999999999 648.2004999999999 648.2004999999999 ZT4-7 690.329 690.329 690.329 ZT8-11 548.4200000000001 548.4200000000001 548.4200000000001 ZT12-15 443.714 443.714 443.714 ZT16-19 406.247 406.247 406.247 ZT20-23 554.065 554.065 554.065