LEGEND
Location
Type of location and section of town.
Spect.
Total terrestrial dose rate as
A
Total terrestrial dose rate obtained from high
pressure ionization chamber.
Port. Inst.
Total terrestrial dese rate inferred from portable
BeVe
Best value of total terrestrial dose rate as
K,U,T
Dose rate contributicrs from potassium-40 and the
uranium-238 and thorium-232 series, respectively.
ToT
Total natural dose rate.
Zr
Dose rate contribution from zirconium-95 and
ph06
Fo(1)
“energy”
inferred
from
in spectrem.
scintillation counter readings.
discussed on page 3.
niobium-95,
Dose rate contribution from rhodium-106.
Sum of zirconium-nicbium-95 and rhodium-106
dose
rates,
rol?)
The difference between 5.V.
Le
Cosmic ray dose rate contribution.
gamma dose rate (TOT).
- 16 -
and the total natural