condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.06764861 0.06764861 0.06764861 ZT12-15 0.0784769 0.0784769 0.0784769 ZT16-19 0.045109300000000005 0.045109300000000005 0.045109300000000005 ZT20-23 0.057924300000000005 0.057924300000000005 0.057924300000000005