condition mean min max ZT0-3 0.08417016666666667 0.0 0.12679 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.24334974999999998 0.131831 0.3548685 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0