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this was a less reliable instrument than the centigrade thermometer, TT, is judged to be

t | (TA

accurate only within 0.5° F. and TT to be accurate only within 0.7° F.

August 28.

TT,, TT, and TI, were all measured to the nearest half-degree F. {.0 or o5)e BE inte

The Fahrenheit thermometer described immediately above was used to measure TT,, and the resultZz

ing observations are correct within 0.7° F.

TT and TI, are correct within 0.5° Fe (see Notes, fF dur

a L

Table 4).
August 31.

TT,, measured to tenths C. (see August 20, above), are accurate within 0.4° BEE hou

TT and Thys measured with a psychron to the nearest half-degree F., are accurate within 0.5° ?

aE pa:

: F

TABLE 17.

LAGOON-OCEAN:

August 18.

LAGOON-OCEAN TRAVERSES.

£4
14

TT, was obtained by canvas bucket~haul from a helicopter using the Centigrade

thermometer described in the Notes for Table 16, above.

Readings were to the nearest 0.1° Ce | ;

Values given are correct within 0.4° F.
August 23.

TT, was measured to the nearest half-degree F., using the F. thermometer

ae

.

described under date of August 23 in Notes, Table 16, above.
0.7° F.

TT and TI, were measured to the closest half-degree F. (.0 or .5) using a psychron. 4

Values are accurate within 0.5° F.
yards off the reef.

TABLE 18.

Ai] values are accurate within 2%

Locations in the ocean (cutside) were all taken 500 to 100%R

.

ENIWETOK-BIKINI:

BI-HOURLY OBSERVATIONS, MSTS - T-LST 618.

Time is correct within 5 minutes.

J

Positions while underway, as given in the log, may be assumed to be accurate within 2
nautical miles.
Ng is correct within one-eighth.

E.ge:

In extreme instances, an entry of "4" may in fa

have been 3/8 or 5/8.

+,

’

q
:
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ea

DD is given to the nearest 10°, with the unit O omitted.
the ship underway, DD was estimated correctly to within 10°.
8°.

Thus 11 represents 110°.

with

With the ship docked, to within

Thus in both instances a minority of the observations may fall in the wrong 10° category:

(plus or minus).

4

FF is given to the nearest knot.
within 5 imots (plus or minus).

With the ship underway, FF was estimated correctly to.

With the ship docked, to within 3 mots.

Windspeeds (and |

directions) were estimated primarily on the basis of the effect of wind upon the water, folie
ing the Beaufort scale and then estimating knots within the Beaufort interval.

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