30-
\e pi
mM
fe
(21)
20.
/
(microroenitgens per hour)
LEVEL
RADIATION
35.
15
|
NN,
10 IN.
MI (53)
Na,
Mita,
ee
¢ a>~
—~
5 -
ng
ETey,
ee
—.
~“oteeeene
ee ee
Compton
0
24
22
20
18
e
°
.
e
o
PRESSURE
BAROMETRIC
26
,
e
28
(inches Hg)
Figure 1.
Variation of environmental radiation dose rates with
barometric pressure.
The lower curves are for cosmic radiation
intensities alone.
The number of observations incorporated in
each point are shown in parentheses.
observations on Pikes Peak.
ope
ee
.
.
-
eo
-
Points marked "P" are
oe
a
+:
6
30