condition mean min max ZT0-3 39.545433333333335 39.545433333333335 39.545433333333335 ZT4-7 81.62960000000001 81.62960000000001 81.62960000000001 ZT8-11 1.2653500000000002 1.2653500000000002 1.2653500000000002 ZT12-15 0.14326250000000001 0.14326250000000001 0.14326250000000001 ZT16-19 1.38271 1.38271 1.38271 ZT20-23 3.7057700000000002 3.7057700000000002 3.7057700000000002