condition mean min max ZT0-3 86.15742499999999 80.13965 92.17519999999999 ZT4-7 62.73845 62.73845 62.73845 ZT8-11 100.08165 100.08165 100.08165 ZT12-15 0 0 0 ZT16-19 121.247 121.247 121.247 ZT20-23 124.5375 124.5375 124.5375