| sensor_id |
varchar (pk) |
|
Unique ID for this instrument |
| observing_method |
int |
observing_method:method |
Method (instrumental, estimated / visual, computed) by which observation made |
| instrument_type |
int |
instrument_type:instrument |
The manufacturer and model of instrument used (where known) |
| sampling_strategy |
int |
sampling_strategy:strategy |
Sampling strategy used by instrument |
| calibration_status |
int |
calibration_status:status |
Whether the sensor is in / out of calibration |
| calibration_date |
timestamp |
|
Date of last calibration |
| comments |
varchar |
|
additional comments for sensor not reportable elsewhere |
| date_start |
timestamp |
|
start date for period of validity assoiciated with this entry |
| date_end |
timestamp |
|
end date for period of validity assoiciated with this entry |
| optional_data |
int |
data_present:flag |
Flag indicating if additional data available |