condition mean min max ZT0-3 0.475834 0.475834 0.475834 ZT4-7 0.7544375000000001 0.7544375000000001 0.7544375000000001 ZT8-11 0.4927085 0.4927085 0.4927085 ZT12-15 0.198661 0.198661 0.198661 ZT16-19 0.7948900000000001 0.7948900000000001 0.7948900000000001 ZT20-23 0.6525354999999999 0.6525354999999999 0.6525354999999999