@staticmethod
def _extract_procpar_bruker(procpar, filepath):
    """
        Extract some commonly-used NMR parameters (using Bruker denotations)
        and return a parameter dictionary 'params'.
        """
    d1 = procpar['RD']
    reffrq = procpar['SFO1']
    nt = procpar['NS']
    sw_hz = procpar['SW_h']
    sw = procpar['SW']
    with open(filepath + '/pdata/1/procs') as f:
        for i in f.readlines():
            if 'OFFSET' in i:
                sw_left = float(i.split(' ')[1])
    at = procpar['TD'] / (2 * sw_hz)
    rt = at + d1
    acqtime = nt * rt / 60.0
    params = dict(at=at, d1=d1, reffrq=reffrq, rt=rt, nt=nt, acqtime=
        acqtime, sw_left=sw_left, sw=sw, sw_hz=sw_hz)
    return params
