condition mean min max ZT0-3 0.018552166666666668 0.0 0.0287361 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0830885 0.0830885 0.0830885 ZT12-15 0.0689488 0.0270376 0.11086 ZT16-19 0.02685265 0.02685265 0.02685265 ZT20-23 0.0 0.0 0.0