condition mean min max ZT0-3 0.015773350000000002 0.015773350000000002 0.015773350000000002 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.013043649999999999 0.013043649999999999 0.013043649999999999 ZT20-23 0.0 0.0 0.0