condition mean min max ZT0-3 0.03234525 0.0 0.0646905 ZT4-7 0.0319335 0.0319335 0.0319335 ZT8-11 0.130027 0.130027 0.130027 ZT12-15 0 0 0 ZT16-19 0.06374540000000001 0.06374540000000001 0.06374540000000001 ZT20-23 0.0643355 0.0643355 0.0643355