condition mean min max ZT0-3 233.65 233.65 233.65 ZT4-7 252.4 252.4 252.4 ZT8-11 283.45 283.45 283.45 ZT12-15 351.15 351.15 351.15 ZT16-19 258.1 258.1 258.1 ZT20-23 263.3 263.3 263.3