condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0928684915 0.0 0.185736983 ZT8-11 0.0 0.0 0.0 ZT12-15 0.16170990125 0.0 0.3234198025 ZT16-19 0.10425076824999999 0.0 0.20850153649999997 ZT20-23 0.0 0.0 0.0