condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.01005985 0.01005985 0.01005985 ZT8-11 0.0 0.0 0.0 ZT12-15 0.00949265 0.00949265 0.00949265 ZT16-19 0.0042208 0.0042208 0.0042208 ZT20-23 0.0 0.0 0.0