condition mean min max ZT0-3 0.516328 0.135881 0.8967750000000001 ZT4-7 2.996814 2.996814 2.996814 ZT8-11 0.22535064999999999 0.22535064999999999 0.22535064999999999 ZT12-15 0 0 0 ZT16-19 0.1339795 0.1339795 0.1339795 ZT20-23 0.0 0.0 0.0