The 'meta' dataframe found in sts and mts objects
is required to have a minimum set of information for proper functioning of
the package. The names of these columns are specified in
requiredMetaNames and include:
deviceDeploymentID -- unique identifier (see MazmaLocationUtils)
deviceID -- device identifier
locationID -- location identifier (see MazmaLocationUtils)
locationName -- English language name
longitude -- decimal degrees E
latitude -- decimal degrees N
elevation -- elevation of station in m
countryCode -- ISO 3166-1 alpha-2
stateCode -- ISO 3166-2 alpha-2
timezone -- Olson time zone
requiredMetaNamesA vector with 10 elements
requiredMetaNames