EL BAZAR AMERICANO 
PRESENTA 
“PANASILLA” 
THE AMERICAN BAZAAR 
PRESENTS 
THE 
PANAMA - COLON 
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1955 TIDE TABLES 
Explanation of the Table 
This table gives the predicted times and 
heights of the tide for each day in the year. 
The afternoon tides are indicated by heavy¬ 
faced type, and the kind of time used is 
noted at the bottom of each page. 
The columns headed "Ht." contain the 
predicted heights referred to the datum 
noted at the bottom of each page. A minus 
sign (-) indicates that the height is below 
the datum. As this datum is the same as 
that used for the charts of the locality, the 
depth of water at any high or low tide may 
be obtained by adding the tabular height 
of that tide to the sounding, unless a minus 
sign is before the height, in which case it 
is to be subtracted. If the soundings are 
given in meters, multiply the tabular height 
of the tide by 0.3, in order to reduce them 
also to meters. To average annual inequal¬ 
ity or variation in mean sea level, due to 
meteorological conditions is included in 
these predictions. This has the effect of 
making the heights of the high and low 
waters slightly higher than the average at 
certain times of the year, and correspond¬ 
ingly lower at other times. 
There are usually two high and two low 
waters each day. When a single vacancy 
occurs in any day, the tide that seems to 
be missing will be found to occur soon after 
midnight as the first high or low water of 
the following day. If more than one tide 
is missing on any day, the tide is said to be 
diurnal; that is, only one high water and 
low water occur during the period of a lunar 
day. 
In using this table of predicted tides, it 
must be borne in mind that they aim to give 
the times and heights of high and low 
waters, and not the times of turning of the 
current or slack water. For stations well 
exposed to the ocean there is usually but 
little difference beween the time of high or 
low water and the beginning of the ebb or 
flood current; but for places in narrow 
channels, landlocked harbors, or on tidal 
rivers, the time of slack current may differ 
by two or three hours from the time of high 
or low water stand, and local knowledge 
is required to enable one to make the proper 
allowance for this delay in the condition of 
tidal currents. 
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