<|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: The probability that a pixel would contain data comprising photo - switchable signals was assessed using two measures : ( 1 ) the contribution of the correct frequency component after Fourier transform ; and ( 2 ) a low r 2 after fitting a single exponential . We extracted the intensity over time from pixels identified to contain photo - switchable signals . These values were fitted with an exponential decay model using an offset constant determined from the sample with the highest free Ca 2 + concentration . To obtain the affinity curve , the decay constant was plotted versus the log value of the free calcium concentration and fitted with a doseresponse model to the Hill slope . The values of the function were fixed to allow the fitting to converge on both maximum ( 39 µM free calcium ) and minimum ( 0 µM free calcium ) .<|eot_id|><|start_header_id|>assistant<|end_header_id|>

no<|eot_id|>