Help in decoding US METAR code
 

METAR CYHM 021100Z 17004KT 15SM FEW240 13/04 A3035 RMK CI1 CI TR
SLP280=

METAR CYXU 021200Z 13007KT 15SM FEW150 FEW210 14/06 A3034 RMK AC1CI1 AC TR SLP275=

Please help to decode this METAR information.
Actually I understand all of this, except TR part. Can you tell for what stays TR? There's no info about it over the internet.

Thanks in advance.

It's a Canadian METAR.
I am not that familiar with them but from here it might be an abbreviation for "Trace".

I am sure someone more familiar with Canadian METARs will pop along soon.

TR stands for Trace.
In your example it refers to the type of cloud mentioned before
No1: Traces (more than CLR but less than FEW) of Cirri (CI)
No2: Traces of Altocumuli (AC)

if anyone is vaguely interested

http://www.navcanada.ca/ContentDefin...S_Guide_EN.pdf

page 44 has the list of abbreviations used

many thanks to you all.
it's really strange that I couldn't find info by myself.