condition mean min max ZT0-3 0.41801459825 0.3650908965 0.4709383 ZT4-7 0.021856034500000003 0.0 0.043712069000000006 ZT8-11 3.72726653025 0.27421292199999997 7.1803201385 ZT12-15 15.765178933000001 12.816915946 18.71344192 ZT16-19 9.714086499 7.3512503245000005 12.0769226735 ZT20-23 2.34222213275 1.4989209415 3.185523324