condition mean min max ZT0-3 0.93958875 0.933022 0.9461555 ZT4-7 2.7215350000000003 2.7215350000000003 2.7215350000000003 ZT8-11 1.4040435 1.4040435 1.4040435 ZT12-15 0 0 0 ZT16-19 2.04705 2.04705 2.04705 ZT20-23 1.1229084999999999 1.1229084999999999 1.1229084999999999