condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 1.261511 1.261511 1.261511 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.365572 0.365572 0.365572 ZT20-23 0.0 0.0 0.0