condition mean min max ZT0-3 0.0500249 0.0500249 0.0500249 ZT4-7 0.02330675 0.02330675 0.02330675 ZT8-11 0.0169037 0.0169037 0.0169037 ZT12-15 0.0077073 0.0077073 0.0077073 ZT16-19 0.00673655 0.00673655 0.00673655 ZT20-23 0.030323450000000002 0.030323450000000002 0.030323450000000002