condition mean min max ZT0-3 0.003900675 0.003900675 0.003900675 ZT4-7 0.0 0.0 0.0 ZT8-11 0.01178165 0.01178165 0.01178165 ZT12-15 0.01425115 0.01425115 0.01425115 ZT16-19 0.0 0.0 0.0 ZT20-23 0.00470589 0.00470589 0.00470589