condition mean min max ZT0-3 0.03402932225 0.022361856500000003 0.045696787999999995 ZT4-7 0.06318566775000001 0.0478302595 0.078541076 ZT8-11 0.03973943825 0.034973703 0.0445051735 ZT12-15 0.00234988425 0.0 0.0046997685 ZT16-19 0.005300845 0.0 0.01060169 ZT20-23 0.0 0.0 0.0