{ "0":"No Altocumulus, Altostratus or Nimbostratus", "1":"Altostratus, the greater part of which is semitransparent; through this part the sun or moon may be weakly visible, as through ground glass", "2":"Altostratus, the greater part of which is sufficiently dense to hide the sun or moon, or Nimbostratus", "3":"Altocumulus, the greater part of which is semitransparent; the various elements of the cloud change only slowly and are all at a single level", "4":"Patches (often in the form of almonds or fish) of Altocumulus, the greater part of which is semi-transparent; the clouds occur at one or more levels and the elements are continually changing in appearance", "5":"Altocumulus clouds generally thicken as a whole; Semi-transparent Altocumulus in bands, or Altocumulus, in one or more fairly continuous layer (semi-transparent or opaque), progresively invading the sky; these Altocumulus clouds generally thicken as a whole", "6":"Altocumulus resulting from the spreading out of Cumulus (or Cumulonimbus)", "7":"Altocumulus in two or more layers, usually opaque in places, and not progressively invading the sky; or opaque layer of Altocumulus, not progressively invading the sky; or Altocumulus together with Altostratus or Nimbostratus", "8":"Altocumulus with sproutings in the form of small towers or battlements, or Altocumulus having the appearance of cumuliform tufts", "9":"Altocumulus of a chaotic sky, generally at several levels", "10":"Altocumulus, Altostratus and Nimbostratus invisible owing to darkness, fog, blowing dust or sand, or other similar phenomena, or more often because of the presence of a continuous layer of lower clouds" }