condition mean min max ZT0-3 0.61535063125 0.5612646695 0.669436593 ZT4-7 0.06597169325 0.028382549999999996 0.1035608365 ZT8-11 9.437407100500002 1.826111346 17.048702855000002 ZT12-15 24.08322359 23.444474059999997 24.72197312 ZT16-19 13.6856519785 10.960409566 16.410894391 ZT20-23 2.99274420975 1.7414288345 4.2440595850000005