# ``refractive_index_anomaly``
## Properties
:dimensions: N_PROF, N_LEVELS
:dtype: float64
## Default Attributes
| Attribute | Value |
|-----|-----|
|``whp_name`` | ``RIANOMALY`` |
|``whp_unit`` | ``ND`` |
|``units`` | ``1`` |
|``C_format`` | ``%9.2f`` |
|``C_format_source`` | ``database`` |
## Description
Refractive indxe anomanly from pure water. Typically reported at the sodium D lines of 589.6 nm and 589.0nm