18_nchc_revise

revise_msg:Clean spaces for 6st variable

Clean spaces for 10st variable

Clean spaces for 12st variable

Clean spaces for 13st variable

Clean spaces for 14st variable

Clean spaces for 15st variable

Clean spaces for 16st variable

Clean spaces for 17st variable

Clean spaces for 18st variable

Clean spaces for 19st variable

Clean spaces for 20st variable

Clean spaces for 21st variable

Clean spaces for 22st variable

Clean spaces for 23st variable

Remove all row or column with na or space