condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.00352101 0.00352101 0.00352101 ZT8-11 0.0079887 0.0079887 0.0079887 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0053865 0.0053865 0.0053865 ZT20-23 0.0 0.0 0.0