YY MM DD hh mm    DIR    SPD    GDR    GSP    GMN

98  6 30 21 20    999   99.0    999   99.0     99
98  6 30 21 30    999   99.0    999   99.0     99
98  6 30 21 40    999   99.0    999   99.0     99
98  6 30 21 50    999    4.1    999   99.0     99
98  6 30 22  0    286   99.0    999   99.0     99
98  6 30 22 10    283    3.4    999   99.0     99
98  6 30 22 20    285    3.7    999   99.0     99
