ISO6709のBNF

BNF description for ISO 6709-1983(E)

Number (N)
　N = "0"|"1"|"2"|"3"|"4"|"5"|"6"|"7"|"8"|"9"

Number for Degrees (D)
　D = N
Number for Minutes (M)
　M = N
Number for Seconds (S)
　S = N

Integer part of Degrees for Latitude (DLAT)
　DLAT = ("+"|"-") D D
　"+" represents North.
　"-" represents South.
　-90<=DLAT<=+90

Integer part of Degrees for Longitude (DLON)
　DLON = ("+"|"-") D D D
　"+" represents East.
　"-" represents West.
　-180<=DLON<=+180

Decimal Fraction of Degrees (DP)
　DP = "." 1*(D)

Integer part of Minutes (MI)
　MI = M M
　0<=MI<60

Decimal Fraction of Minutes (MP)
　MP = "." 1*(M)

Integer part of Seconds (SI)
　SI = S S
　0<=SI<60

Decimal Fraction of Seconds (SP)
　SP = "." 1*(S)

　LatitudeInD   = DLAT [ DP ]       = ("+"|"-") D D [ "." 1*(D) ]
　LatitudeInDM  = DLAT MI [ MP  ]   = ("+"|"-") D D M M [ "." 1*(M) ]
　LatitudeInDMS = DLAT MI SI [ SP ] = ("+"|"-") D D M M S S [ "." 1*(S) ]

　LongitudeInD   = DLON [ DP ]       = ("+"|"-") D D D [ "." 1*(D) ]
　LongitudeInDM  = DLON MI [ MP ]    = ("+"|"-") D D D M M [ "." 1*(M) ]
　LongitudeInDMS = DLON MI SI [ SP ] = ("+"|"-") D D D M M S S [ "." 1*(S) ]

Altitude [m] (Altitude)
　Altitude = ("+"|"-") 1*(N)  ["." 1*(N) ]

Delimiter
　Delimiter = "/"

　LatLonAltInD = LatitudeInD LongitudeInD [Altitude] Delimiter
　LatLonAltInDM = LatitudeInDM LongitudeInDM [Altitude] Delimiter
　LatLonAltInDMS = LatitudeInDMS LongitudeInDMS [Altitude] Delimiter

ISO6709 Latitude Longitude Altitude Representation
　LatLonAlt = LatLonAltInD | LatLonAltInDM | LatLonAltInDMS

Examples:
　+40-075/
　+40.20361-075.00417/
　+4012.22-007500.25/
　+401213.1-0750015.1/
　+40.20361-075.00417+350.517/