{'fraction_non_alphanumeric': 0.015360983102918587, 'fraction_numerical': 0.006144393241167435, 'mean_word_length': 5.653061224489796, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Measurements of methane content in the atmosphere with the use of several modifications of the spectroscopic method and instrumentation

We present here some measurement results on the atmospheric methane column density, which were obtained in Zvenigorod, in September 1997. The measurements have been carried out in parallel, using several variants of the spectroscopic method and instrumentation. Thus, obtained results showed that three different modifications of the method and measurement instrument that are normally used on long-term observations in different observation sites yield, when operated in one site, the data that agrees quite well.