GroupBy.nth(n, dropna=None)

Resampler.fillna(method, limit=None)

DatetimeIndex.dropna(how='any')

classmethod Panel.from_dict(data, intersect=False, orient='items', dtype=None)

DatetimeIndex.is_numeric()

DatetimeIndex.fillna(value=None, downcast=None)

DatetimeIndex.memory_usage(deep=False)

DatetimeIndex.tolist()

DatetimeIndex.ndim return the number of dimensions of the underlying data, by definition 1

Panel.clip_lower(threshold, axis=None)