condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0302995 0.0302995 0.0302995 ZT8-11 0.0288249 0.0288249 0.0288249 ZT12-15 0.0150491 0.0150491 0.0150491 ZT16-19 0.02630725 0.02630725 0.02630725 ZT20-23 0.0394338 0.0394338 0.0394338