Figure 5
Temporal variations of neutron count rate (Oulu, Finland), tritium concentrations of precipitation and 7Be concentrations of atmospheric air. The values are expressed as a relative deviation compared to the long term averages. Note that the Kaitoke and Cuxhaven time series have been corrected for the contribution of the bomb peak. It can be obviously seen that neutron count rate and 7Be have an amplitude of 8–15% of the average, 3H might vary in a wider scale.
