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OCR: Table 4 Effect of propagation absorption Percentage of antenna use data period data period Antenna January- -June, 1979 October 1978-June, 1979 Type All values of A(1 Aless than 10 greater than 15 Small Y agi 35.3 32 33.9 Large Yagi 12.5 11.3 Small Quad 15.3 15.5 11.3 Large Quad 3.0 Verticals 19.8 17 Dipoles 15.1 15.5 19 Other No.of QSOs 399 482 203 (1) Ais the second number given by WWV Propagation report less erticals