condition mean min max ZT0-3 0.023190325 0.0 0.04638065 ZT4-7 0.0457288 0.0457288 0.0457288 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.04606415 0.04606415 0.04606415