condition mean min max ZT0-3 367.3 367.3 367.3 ZT4-7 194.4 194.4 194.4 ZT8-11 235.85 235.85 235.85 ZT12-15 268.2 268.2 268.2 ZT16-19 329.85 329.85 329.85 ZT20-23 230.8 230.8 230.8