condition mean min max ZT0-3 0.12166978333333335 0.0795711 0.16083350000000002 ZT4-7 0.0 0.0 0.0 ZT8-11 0.05936860000000001 0.05936860000000001 0.05936860000000001 ZT12-15 0.040367275 0.0 0.08073455 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0