Series.cov(other, min_periods=None)

Series.plot.area(**kwds)

Series.fillna(value=None, method=None, axis=None, inplace=False, limit=None, downcast=None, **kwargs)

Series.sort(axis=0, ascending=True, kind='quicksort', na_position='last', inplace=True)

Series.str.match(pat, case=True, flags=0, na=nan, as_indexer=False)

Series.dt.year The year of the datetime

Series.order(na_last=None, ascending=True, kind='quicksort', na_position='last', inplace=False)

Series.add_suffix(suffix)

Series.str.isalpha()

Series.radd(other, level=None, fill_value=None, axis=0)