band_B1: B1 band
In agathasr/bband: Bayesian bands.

band_B1 return a matrix with B1 band.

1	band_B1(post, alpha, interval)

`post`	Matrix with dimension n.time by n.size containing posterior values for n.time times and n.size posterior sample.
`alpha`	Value inside the interval (0,1) in order to get a credibility level of 100(1 - alpha)%.
`interval`	Choice between "equal" and "hpd". The "equal" considers equal tails (each tail has alpha/2 area) and "hpd" considers the HPD interval.

A list with the following components:

`B1`	A matrix with n.time rows and 2 columns with B1 band.
`alpha`	The information about the credibility level of 100(1 - alpha)%.
`interval`	If "equal" or "hpd".