Accuracy of the formulae (A.) and (B.) *: f os's 1< r <2 24r 43 ||34 r <5 |5s r <10|10<r $15 | r > 15 x --0.9s: 4–0.7 6-7 3–6 2–3 2-4 3-5 3-5 4-7 –0.7s x ...
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