new_dtypes[element]='object'# Only on output (on reading) will be then converted to datetime64[ns] type, cannot specify 'datetime' here: have to go through parser
# 'datetime' is not a valid pandas dtype: Only on output (on reading) will be then converted (via parse_dates) to datetime64[ns] type, cannot specify 'datetime' (of any kind) here: will fail
date_columns=[]# Needs to be the numeric index of the column, as seems not to be able to work with tupples....
"1":"Cirrus in the form of filaments, strands or hooks, not progressively invading the sky",
"2":"Dense Cirrus, in patches or entangled sheaves, which usually do not increase and sometimes seem to be the remains of the upper part of a Cumulonimbus, or Cirrus with sproutings in the form of small turrets or battlements, or Cirrus having the appearance of cumuliform tufts",
"3":"Dense Cirrus, often in the form of an anvil, being the remains of the upper parts of Cumulonimbus",
"4":"Cirrus in the form of hooks or of filaments, or both, progressively invading the sky; they generally become denser as a whole",
"5":"Cirrus (often in bands converging towards one point or two opposite points of the horizon) and Cirrostratus, or Cirrostratus alone; in either case, they are progressively invading the sky, and generally growing denser as a whole, but the continuous veil does not reach 45 degrees above the horizon.",
"6":"Cirrus (often in bands converging towards one point or two opposite points of the horizon) and Cirrostratus, or Cirrostratus alone; in either case, they are progressively invading the sky, and generally growing denser as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered",
"7":"Veil of Cirrostratus covering the celestial dome",
"8":"Cirrostratus not progressively invading the sky and not completely covering the celestial dome",
"9":"Cirrocumulus alone, or Cirrocumulus accompanied by Cirrus or Cirrostratus, or both, but Cirrocumulus is predominant",
"10":"Cirrus, Cirrocumulus and Cirrostratus 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"
"1":"Cirrus in the form of filaments, strands or hooks, not progressively invading the sky",
"2":"Dense Cirrus, in patches or entangled sheaves, which usually do not increase and sometimes seem to be the remains of the upper part of a Cumulonimbus, or Cirrus with sproutings in the form of small turrets or battlements, or Cirrus having the appearance of cumuliform tufts",
"3":"Dense Cirrus, often in the form of an anvil, being the remains of the upper parts of Cumulonimbus",
"4":"Cirrus in the form of hooks or of filaments, or both, progressively invading the sky; they generally become denser as a whole",
"5":"Cirrus (often in bands converging towards one point or two opposite points of the horizon) and Cirrostratus, or Cirrostratus alone; in either case, they are progressively invading the sky, and generally growing denser as a whole, but the continuous veil does not reach 45 degrees above the horizon.",
"6":"Cirrus (often in bands converging towards one point or two opposite points of the horizon) and Cirrostratus, or Cirrostratus alone; in either case, they are progressively invading the sky, and generally growing denser as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered",
"7":"Veil of Cirrostratus covering the celestial dome",
"8":"Cirrostratus not progressively invading the sky and not completely covering the celestial dome",
"9":"Cirrocumulus alone, or Cirrocumulus accompanied by Cirrus or Cirrostratus, or both, but Cirrocumulus is predominant",
"10":"Cirrus, Cirrocumulus and Cirrostratus 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"
"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"
