10 0 NO WIND SPEED DATA AVAILABLE
21 1 AMSR-E DATA
32 2 TMI DATA
43 3 NWP: ECMWF
54 4 NWP: UK MET OFFICE
65 5 NWP: NCEP
76 6 REFERENCE CLIMATOLOGY
87 7 ERS_SCATTEROMETER
931 31 MISSING VALUE
10