docs: def guidance_UV(index):
      """Return Met Office guidance regarding UV exposure based on UV index"""
      if 0 < index < 3:
          guidance = "Low exposure. No protection required. You can safely stay outside"
      elif 2 < index < 6:
          guidance = "Moderate exposure. Seek shade during midday hours, cover up and wear sunscreen"
      elif 5 < index < 8:
          guidance = "High exposure. Seek shade during midday hours, cover up and wear sunscreen"
      elif 7 < index < 11:
          guidance = "Very high. Avoid being outside during midday hours. Shirt, sunscreen and hat are essential"
      elif index > 10:
          guidance = "Extreme. Avoid being outside during midday hours. Shirt, sunscreen and hat essential."
      else:
          guidance = None
      return guidance