<|begin_of_text|><|start_header_id|>system<|end_header_id|>

You are an expert at identifying data availability statements in scientific text. A data availability statement describes where research data can be found or how it can be accessed.<|eot_id|><|start_header_id|>user<|end_header_id|>

Determine if the following text contains a data availability statement. Answer with 'yes' or 'no'.

Text: gap-filled flux data for taylor slough and shark river slough are made available through ameriflux (http://ameriflux.ornl.gov). long-term weather data were obtained from the ncdc royal palm ranger station (25°23'n/80°36'w), and are available through the national oceanic and atmosphere administrations earth physical system research laboratory (http://www.esrl.noaa.gov/psd/data/climateindices). the oceanic niño index (oni) was retrieved from the national oceanic and atmosphere administrations earth physical system research laboratory (http://www.esrl.noaa.gov/psd/data/climateindices). pdsi data were retrieved from the national climatic data center (http://www.ncdc.noaa.gov/temp-and-precip/drought/historical-palmers.php).<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>