data frame containing the output of the MCMC algorithm.
position
Numeric vector containing the position of the column
corresponding to the MCMC chains of interest.
level
Probability corresponding to the level of confidence used
for the credible interval.
roundingOfValue
Integer indicating the number of decimal places.
Value
Returns a matrix of values containing the level of confidence and the endpoints of
the shortest credible interval for each variable of the MCMC chain. The name of the
resulting rows are the positions of the corresponding columns in the CSV file. The
result is given in calendar years (BC/AD).