condition mean min max ZT0-3 0.02337725 0.02337725 0.02337725 ZT4-7 0.048677649999999996 0.048677649999999996 0.048677649999999996 ZT8-11 0.06166485 0.06166485 0.06166485 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.00705075 0.00705075 0.00705075