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Table 1:

Explanation of the different fitting parameters used for Eq. (1).
Distribution type Fit parameter Representation Meaning
lifetimes x(t) A(t) Number of MBPs with a lifetime of t minutes in a 1 min interval.
      Could be interpreted as ``activity'' (according to radio-activity):
      number of MBPs that decay within 1 min at time t.
  a A(0) Starting activity (number of MBPs which will decay within the first min)
  b $\lambda$ Decaying parameter (related to the mean lifetime $\tau=1/\lambda$)
cumulated x(t) N(t) Number of MBPs with a lifetime greater than t
lifetimes a N(0) Number of all MBPs
  b $\lambda$ Decaying parameter


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