condition mean min max ZT0-3 46.47165 46.47165 46.47165 ZT4-7 54.0958 54.0958 54.0958 ZT8-11 44.039950000000005 44.039950000000005 44.039950000000005 ZT12-15 67.3069 67.3069 67.3069 ZT16-19 48.03445 48.03445 48.03445 ZT20-23 49.18935 49.18935 49.18935