ctdcal.oxy_fitting.prepare_oxy¶ ctdcal.oxy_fitting.prepare_oxy(btl_df, time_df, ssscc_list)[source]¶ Calculate oxygen-related variables needed for calibration: sigma, oxygen solubility (OS), and bottle oxygen Parameters: btl_df (DataFrame) – CTD data at bottle stops time_df (DataFrame) – Continuous CTD data ssscc_list (list of str) – List of stations to process