condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.01383285 0.01383285 0.01383285 ZT8-11 0.0189053 0.0189053 0.0189053 ZT12-15 0.0220311 0.0220311 0.0220311 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0