condition mean min max ZT0-3 0.068082925 0.0344508 0.10171505 ZT4-7 0.0339666 0.0339666 0.0339666 ZT8-11 0.20745799999999998 0.20745799999999998 0.20745799999999998 ZT12-15 0 0 0 ZT16-19 0.0338351 0.0338351 0.0338351 ZT20-23 0.10236125000000001 0.10236125000000001 0.10236125000000001