def get_lomb_frequency_ratio(lomb_model, i):
    return (lomb_model['freq_fits'][i-1]['freq'] / 
            lomb_model['freq_fits'][0]['freq'])
Get the ratio of the ith and first frequencies from a fitted Lomb-Scargle
dataset/ETHPy150Open cesium-ml/cesium/cesium/science_features/lomb_scargle.py/get_lomb_frequency_ratio