condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.01787415 0.01787415 0.01787415 ZT8-11 0.06021105 0.06021105 0.06021105 ZT12-15 0.0 0.0 0.0 ZT16-19 0.05604870000000001 0.05604870000000001 0.05604870000000001 ZT20-23 0.0 0.0 0.0