condition mean min max ZT0-3 0.0066992 0.0066992 0.0066992 ZT4-7 0.0107933 0.0107933 0.0107933 ZT8-11 0.01475115 0.01475115 0.01475115 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0140676 0.0140676 0.0140676 ZT20-23 0.0 0.0 0.0