Swath Data File: twoa.gps MBIO Data Format ID: 15 Format name: MBF_SBURIVAX Informal Description: URI Sea Beam from VAX Attributes: Sea Beam, bathymetry, 19 beams, binary, centered, VAX byte order, URI. Data Totals: Number of Records: 24010 Bathymetry Data (19 beams): Number of Beams: 456190 Number of Good Beams: 310471 68.06% Number of Zero Beams: 145719 31.94% Number of Flagged Beams: 0 0.00% Amplitude Data (0 beams): Number of Beams: 0 Number of Good Beams: 0 0.00% Number of Zero Beams: 0 0.00% Number of Flagged Beams: 0 0.00% Sidescan Data (0 pixels): Number of Pixels: 0 Number of Good Pixels: 0 0.00% Number of Zero Pixels: 0 0.00% Number of Flagged Pixels: 0 0.00% Navigation Totals: Total Time: 38.3972 hours Total Track Length: 640.7260 km Average Speed: 16.6868 km/hr ( 9.0199 knots) Start of Data: Time: 05 01 1981 21:13:19.000000 JD121 Lon: -128.8517 Lat: 47.4748 Depth: 2665.0000 meters Speed: 0.0000 km/hr ( 0.0000 knots) Heading: 18.6329 degrees Sonar Depth: 0.0000 m Sonar Altitude: 2665.0000 m End of Data: Time: 05 03 1981 11:37:09.000000 JD123 Lon: -129.0401 Lat: 47.5324 Depth: 2536.0000 meters Speed: 16.7755 km/hr ( 9.0679 knots) Heading: 199.6888 degrees Sonar Depth: 0.0000 m Sonar Altitude: 2536.0000 m Limits: Minimum Longitude: -129.0547 Maximum Longitude: -128.6261 Minimum Latitude: 47.4312 Maximum Latitude: 47.9487 Minimum Sonar Depth: 0.0000 Maximum Sonar Depth: 0.0000 Minimum Altitude: 0.0000 Maximum Altitude: 2739.0000 Minimum Depth: 2059.0000 Maximum Depth: 2792.0000 Data Record Type Notices: DN: 24010 MB_DATA_DATA (ID=1): survey data Nonfatal Error Notices: EN: 5 MB_ERROR_TIME_GAP (ID=-1): Time gap in data Problem Notices: PN: 2 DATA PROBLEM (ID=2): Zero longitude or latitude in survey data PN: 2 DATA PROBLEM (ID=3): Instantaneous speed exceeds 25 km/hr Coverage Mask: CM dimensions: 10 10 CM: 0 0 0 1 1 1 1 1 1 1 CM: 0 0 0 1 1 1 1 1 1 1 CM: 0 0 1 1 1 1 1 1 1 1 CM: 0 0 1 1 1 1 1 1 1 0 CM: 0 1 1 1 1 1 1 1 0 0 CM: 0 1 1 1 1 1 1 1 0 0 CM: 1 1 1 1 1 1 1 0 0 0 CM: 1 1 1 1 1 1 1 0 0 0 CM: 1 1 1 1 1 1 0 0 0 0 CM: 1 1 1 1 1 1 0 0 0 0