One will sometimes see a question mark in the body of a TAF (Terminal Aerodrome Forecast), such as in the second line below:
TAF MDLR 162200Z 1700/1800 00000KT 9999 SCT018
PROB30 1704/1710 8000 ?SHRA BKN016
BECMG 1713/1715 07010KT
Is there any time that this is correct, or should it always be considered a typo when it is encountered? I haven't found any references to such an annotation while searching online, but those resources tend to be FAA-centric, and if other weather reporting uses that punctuation to convey a specific meaning, I'd be interested to know about that.