condition mean min max ZT0-3 23.009050000000002 21.67635 24.34175 ZT4-7 44.52745 44.52745 44.52745 ZT8-11 33.884699999999995 33.884699999999995 33.884699999999995 ZT12-15 0 0 0 ZT16-19 32.1437 32.1437 32.1437 ZT20-23 40.11405 40.11405 40.11405