def get_lomb_amplitude_ratio(lomb_model, i):
    return (lomb_model['freq_fits'][i-1]['amplitude'][0] / 
            lomb_model['freq_fits'][0]['amplitude'][0])
Validates that the given email address is not used by another user.
dataset/ETHPy150Open cesium-ml/cesium/cesium/science_features/lomb_scargle.py/get_lomb_amplitude_ratio--crossover with--dataset/ETHPy150Open scieloorg/scielo-manager/scielomanager/journalmanager/forms.py/UserChangeForm.clean_email