condition mean min max ZT0-3 4222.52 4222.52 4222.52 ZT4-7 5350.135 5350.135 5350.135 ZT8-11 5244.14 5244.14 5244.14 ZT12-15 6623.601112 6623.601112 6623.601112 ZT16-19 4127.969999666667 4127.969999666667 4127.969999666667 ZT20-23 3162.362222 3162.362222 3162.362222