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The
following table contains values of Tamkin calculated
for latitudes zero through sixty degrees (inclusive)
on a five-hundred-metre scale graduated into
multiples of twenty-five.
The uppermost orange-coloured horizontal line of
values on the table represents elevations from zero
to five hundred metres graduated from left to right,
and the first vertical line of orange-coloured
figures arranged so as to increase on a downward
direction indicates latitudes from zero to sixty
degrees. Figures whereon the two lines of values
intersect are the values of Tamkin in minutes and
seconds. For instance, period of Tamkin for an
elevation of 250 metres
on latitude 2o
is 6 minutes and 25 seconds, as is indicated in
orange colour on the following table.
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E L E V A T I O N (METRES) |
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