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Instantaneous Value Qualification Code (uv_rmk_cd)

Code  Description
e     The value has been edited or estimated by USGS personnel
A     The value is affected by ice at the measurement site.
B     The value is affected by backwater at the measurement site.
R     The rating is undefined for this value
&     This value is affected by unspecified reasons.
K     The value is affected by  instrument calibration drift.
X     The value is erroneous. It will not be used.
<     The Value is known to be less than reported value
>     The value is known to be greater than reported value
E     The value was computed from an estimated value
F     The value was modified due to automated filtering.