DAC

10

412

FI

6

01

Forecast time

5

0 to 23, with the hour as the forecast point

Weather phenomena #1

5

Weather phenomenon codes range from 1 to 31 (see Table 7), beyond the range is invalid

Longitude #1

13

Unit: minute, range: 60 ° E to 180 ° E, base 60 ° E, the interval is 1'

Latitude #1

13

Unit: minute, range: 50 °S to 70 °N, base 50 °S, the interval is 1'

Wind speed #1

7

Unit: section, range: 0kn to 120kn, beyond 120kn is invalid

Wind direction #1

9

Unit: degree, range: 0 °~359 °, beyond the range is invalid

Air

temperature #1

11

Unit: degrees Celsius, range: -60.0 °C to 60.0 °C, the interval is 0.1 °C, beyond the range is invalid

Air Pressure #1

9

Unit: hPa, range: 800 hPa to 1 200 hPa, base 800 hPa, the interval is 1 hPa 

Visibility #1

8

Unit: nautical mile, range: 0.0 nm to 25.0 nm, the interval is 0.1 nm

Weather phenomena #n

5

Weather phenomenon codes range from 1 to 31 (see Table 7), beyond the range is invalid

Longitude #n

7

Unit: minute, range: 60 ° E to 180 ° E, base 60 ° E, the interval is 1'

Latitude #n

7

Unit: minute, range: 50 °S to 70 °N, base 50 °S, the interval is 1'

Wind speed #n

7

Unit: section, range: 0kn to 120kn, beyond 120kn is invalid

Wind direction #n

9

Unit: degree, range: 0 ° to 359 °, beyond the range is invalid

Air

temperature #n

11

Unit: degrees Celsius, range: -60.0 °C to 60.0 °C, the interval is 0.1 °C, beyond the range is invalid

Air pressure #n

9

Unit: hPa, range: 800 hPa to 1 200 hPa, base 800 hPa, the interval is 1 hPa 

Visibility #n

8

Unit: nautical mile, range: 0.0 nm to 25.0 nm, the interval is 0.1 nm 

Sources of information

3

1: China Meteorological Administration, 2: China Oceanic Administration, 3:

China Maritime Safety Administration, 4 to 7 reserved

Spare fill bit

0 ~ 7

Total number

of bits

99+  (n-1)

*63+ (0~7)

Note: negative codes are represented by a complement