condition mean min max ZT0-3 23.469775000000002 20.52145 26.418100000000003 ZT4-7 14.550650000000001 14.550650000000001 14.550650000000001 ZT8-11 11.41631 11.41631 11.41631 ZT12-15 0 0 0 ZT16-19 14.8185 14.8185 14.8185 ZT20-23 16.454050000000002 16.454050000000002 16.454050000000002