Weather station down

• Include in qa_notes.html and email to observer:
  
  • "We were experiencing problems with our weather station during this observation. Weather data may have outages, or be completely missing. Weather data is used as part of the estimate of opacity, but otherwise should not significantly affect the quality of your data. Opacity corrections are most important for high-frequency observations, and when there is a large elevation difference between the flux density scale calibrator and the complex gain calibrator."
• Make note on this page of date range (e.g. by adding an "expand" macro when editing)
• Make note on this page of "high-frequency" (K, Ka, Q) observations where there is > ~20d elevation difference between flux calibrator and gain calibrator(s).

<20 deg difference:
21B-089.sb40219727.eb40946458.59521.458198900466
21B-336.sb40182751.eb40950603.59523.82336241898
21A-342.sb40772830.eb40950605.59523.8958196412
20B-310.sb40946694.eb40950609.59524.05166916667 (qaFail)
21B-267.sb40412860.eb40950615.59524.40718811343
21B-358.sb40942450.eb40950620.59524.566464710646

>20 deg difference:
21B-054.sb40862361.eb40950650.59526.13778577546 (Lorant Co-I, abnormal cycle, 41 fields)
21B-049.sb40220220.eb40962443.59530.04358519676