def parse_apbs_output(apbs_file):
    """Parse APBS output files for SASA information.

    :param file apbs_file:  file-like object with APBS output data
    :returns:  list of per-atom SASAs
    :rtype:  list(float)
    """
    sasa_values = []
    for line in apbs_file:
        line = line.strip()
        if line.startswith("SASA for atom "):
            words = line.split()
            sasa = float(words[4])
            sasa_values.append(sasa)
    return sasa_values