condition mean min max ZT0-3 0.340246 0.269173 0.411319 ZT4-7 0.09036440000000001 0.09036440000000001 0.09036440000000001 ZT8-11 0.7198395 0.7198395 0.7198395 ZT12-15 0 0 0 ZT16-19 0.5292335 0.5292335 0.5292335 ZT20-23 0.38410999999999995 0.38410999999999995 0.38410999999999995