condition mean min max ZT0-3 0.1957565 0.1055725 0.3085125 ZT4-7 0.0 0.0 0.0 ZT8-11 0.3186115 0.3186115 0.3186115 ZT12-15 0.21636375000000002 0.0 0.43272750000000004 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0