Class for locality metadata
When reading without metadata, then locality is named after file where the data come from, or after the sensor id where the data come form.
locality_idname of locality
elevationof locality
lat_wgs84latitude of locality in WGS-84
lon_wgs84longitude of locality in WGS-84
tz_offsetoffset from UTC in minutes
tz_typetype of time zone
join_seriallist of serial numbers of loggers for join operation
user_datalist for user data