USGS Open-File Report 2009-1089 Data are compressed (zipped). Line data are archived in ASCII xyz format, described as follows: Columns Format Description Units 1-5 I5 Fiducial number 6-13 I8 Line number number 14-19 F6.0 Flight direction degrees 20-27 A5 Date flown YMMDD 28-37 A9 Year/Julian date YYYYDDD 38-42 F4.0 Time - hours hours 42-47 F4.0 Time - minutes minutes 48-54 F6.2 Time - seconds seconds 55-67 F12.5 Latitude (WGS84) decimal degrees 68-80 F12.5 Longitude (WGS84) decimal degrees 81-93 F12.5 Latitude (NAD27) decimal degrees 94-106 F12.5 Longitude (NAD27) decimal degrees 107-118 F11.2 UTM X (WGS84) meters 119-130 F11.2 UTM Y (WGS84) meters 131-142 F11.2 UTM X (NAD27) meters 143-154 F11.2 UTM Y (NAD27) meters 155-164 F9.2 Day's seconds, UTC time second 165-172 F7.1 GPS ellipsoid height meters 173-179 F6.1 Raw radar altimeter, height above ground meters 180-186 F6.1 Lagged radar altimeter, height above ground meters 187-192 F5.2 Raw laser altimeter volts 193-199 F6.1 Laser altimeter, height above ground meters 200-207 F7.1 Ground surface ellipsoid height meters 208-217 F9.2 Base station magnetics nT 218-227 F9.0 Fluxgate x-axis volts 228-237 F9.0 Fluxgate y-axis volts 239-247 F9.0 Fluxgate z-axis volts 248-258 F9.2 Raw Magnetics nT 259-268 F9.2 Compensated magnetics nT 269-278 F9.2 Diurnally corrected magnetics nT 279-288 F9.2 Heading corrected magnetics nT 289-298 F9.2 Lag-corrected magnetics nT 299-308 F9.2 Conventionally leveled magnetics nT 309-318 F9.2 Calculated IGRF, 2005 model nT 319-328 F9.2 Diurnally + IGRF-corrected + leveled magnetics nT 329-338 F9.2 Final leveled magnetics nT 339-347 F8.2 Zero-mean final magnetics nT SAMPLE DATA: 7494 11 203 81027 2008301 8 41 57.16 38.60250 -106.17419 38.60249 -106.17361 397756.77 4273320.32 397805.10 4273112.25 52917.20 2972.2 150.7 156.7 0.88 -38.3 2818.6 51922.58 -450372 -111706 -196012 52146.62 52145.77 52138.89 52144.81 52145.34 52145.34 52274.28 52124.20 52123.6 187.24 7495 11 203 81027 2008301 8 41 57.27 38.60248 -106.17420 38.60247 -106.17361 397755.99 4273318.16 397804.32 4273110.08 52917.30 2972.2 151.1 157.1 0.88 -38.3 2818.2 51922.58 -450385 -114030 -195119 52145.68 52145.23 52138.34 52144.27 52144.81 52144.81 52274.27 52123.68 52123.1 186.72 7496 11 203 81027 2008301 8 41 57.38 38.60246 -106.17421 38.60245 -106.17362 397755.21 4273315.99 397803.55 4273107.92 52917.40 2972.2 151.5 157.5 0.88 -38.3 2817.7 51922.58 -450309 -115124 -194462 52145.46 52144.67 52137.78 52143.70 52144.27 52144.27 52274.26 52123.15 52122.6 186.19