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Table II-2. The number of days favourable for flight and exchange by flight

YEAR FAVOURABLE DAYS % EXCHANGED
TOTAL DURING REPRODUCTION PER MONTH MALES  FEMALES
 Nn
1974 30 21 (70.0) 5.0 0.22 0.11
1976 64 56 (87.5) 10.7 1.60 0.40
1977 22 19 (86.4) 4.4 0.34 0.30