condition mean min max ZT0-3 0.41361749999999997 0.2934235 0.5338115 ZT4-7 0.8148344999999999 0.8148344999999999 0.8148344999999999 ZT8-11 1.588085 1.588085 1.588085 ZT12-15 0 0 0 ZT16-19 1.204576 1.204576 1.204576 ZT20-23 1.07112 1.07112 1.07112