Retrieve metrics from the global targeted region table.

def _parse_qualimap_globals_inregion(table):
    """Retrieve metrics from the global targeted region table.
    """
    out = {}
    for row in table.find_all("tr"):
        col, val = [x.text for x in row.find_all("td")]
        if col == "Mapped reads":
            out.update(_parse_num_pct("%s (in regions)" % col, val))
    return out