condition mean min max ZT0-3 0.03838598375 0.0 0.0767719675 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.027254470750000002 0.0 0.054508941500000005 ZT16-19 0.15735560575000002 0.0 0.31471121150000003 ZT20-23 0.18701838675 0.135981563 0.2380552105