Riometer data for:  Data-based optimization of a simple shortwave fadeout absorption model
<|begin_of_text|><|start_header_id|>system<|end_header_id|> You are a research archivist expert in dataset metadata. Answer the question truthfully.  <|eot_id|><|start_header_id|>user<|end_header_id|> Here is the Description of a dataset. Description:'Level 3 1-second data files for the Natural Resources Canada (NRCan) riometer stations (https://www.spaceweather.gc.ca/data-donnee/ionosphere/index-en.php#hf).  Data fields include time, observed voltage (V), number of samples per second, voltage range per second (V), calibration flag (0-data period, 1-calibration period), quiet day curve voltage (V), absorption (dB), quality flag (1-good quality)' . Please return only a json list of at most 3 Keywords corresponding to the Description:.<|eot_id|><|start_header_id|>assistant<|end_header_id|> {"Answer" : ["absorption","ionosphere","riometer","space weather"]} <|eot_id|>
 Here is the Description of a dataset. Description:'Level 3 1-second data files for the Natural Resources Canada (NRCan) riometer stations (https://www.spaceweather.gc.ca/data-donnee/ionosphere/index-en.php#hf).  Data fields include time, observed voltage (V), number of samples per second, voltage range per second (V), calibration flag (0-data period, 1-calibration period), quiet day curve voltage (V), absorption (dB), quality flag (1-good quality)' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
Level 3 1-second data files for the Natural Resources Canada (NRCan) riometer stations (https://www.spaceweather.gc.ca/data-donnee/ionosphere/index-en.php#hf).  Data fields include time, observed voltage (V), number of samples per second, voltage range per second (V), calibration flag (0-data period, 1-calibration period), quiet day curve voltage (V), absorption (dB), quality flag (1-good quality)
absorption; ionosphere; riometer; space weather