condition mean min max ZT0-3 257.45 257.45 257.45 ZT4-7 235.7 235.7 235.7 ZT8-11 271.55 271.55 271.55 ZT12-15 322.6 322.6 322.6 ZT16-19 308.65 308.65 308.65 ZT20-23 293.95 293.95 293.95