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 I7 Line number number 14-20 F6.0 Flight direction degrees 21-26 A5 Date flown YMMDD 27-36 A9 Year/Julian Date YYYYDDD 37-41 F4.0 Time - hours hours 42-46 F4.0 Time - minutes minutes 47-53 F4.0 Time - seconds seconds 54-66 F12.5 Latitude (WGS84) decimal degrees 67-79 F12.5 Longitude (WGS84) decimal degrees 80-92 F12.5 Latitude (NAD27) decimal degrees 93-105 F12.5 Longitude (NAD27) decimal degrees 106-117 F11.2 UTM X (NAD 27) meters 118-129 F11.2 UTM Y (NAD 27) meters 130-141 F11.2 UTM X (WGS 84) meters 142-153 F11.2 UTM Y (WGS 84) meters 154-163 F9.2 Day's secs., UTC time seconds 164-171 F7.1 GPS ellipsoid height meters 172-179 F7.1 Raw radar altimeter, height above ground meters 180-187 F7.1 Radar altimeter merged with laser altimeter meters 188-195 F7.1 Raw laser altimeter, height above ground meters 196-203 F7.1 Laser altimeter over dunes only, spikes removed meters 204-211 F7.1 Laser altimeter over dunes only, spikes removed and interpolated meters 212-219 F7.1 Ground surface ellipsoid height meters 220-229 F9.2 Base station magnetics nT 230-239 F9.0 Fluxgate x-axis volts 240-249 F9.0 Fluxgate y-axis volts 250-259 F9.0 Fluxgate z-axis volts 260-269 F9.2 Raw magnetics nT 270-279 F9.2 Compensated magnetics nT 280-289 F9.2 Diurnally corrected magnetics nT 290-299 F9.2 Heading-corrected magnetics nT 300-309 F9.2 Lag-corrected magnetics nT 310-319 F9.2 Conventionally leveled magnetics nT 320-329 F9.2 Calculated IGRF, 2005 model nT 330-339 F9.2 Diurnally + IGRF-corrected + leveled magnetics nT 340-349 F9.2 Final leveled magnetics nT 350-358 F8.2 Zero-mean final magnetics nT SAMPLE DATA: 39765 2350 270 81013 2008287 15 7.0 14.71 37.53669 -105.54670 37.53668 -105.54613 451700.28 4154552.72 451750.18 4154346.70 76034.73 2798.2 106.6 106.6 * * * 2699.4 51390.30 -431468 -241820 -54143 51594.73 51595.28 51577.18 51572.18 51572.57 51569.96 51766.29 51660.16 51660.65 93.31 39766 2350 270 81013 2008287 15 7.0 14.82 37.53669 -105.54674 37.53668 -105.54616 451697.38 4154552.80 451747.29 4154346.78 76034.82 2797.9 106.8 106.8 * * * 2699.0 51390.30 -430346 -243176 -57188 51595.12 51595.67 51577.57 51572.57 51572.96 51570.36 51766.29 51660.56 51661.05 93.71 39767 2350 270 81013 2008287 15 7.0 14.93 37.53670 -105.54677 37.53668 -105.54619 451694.49 4154552.88 451744.40 4154346.86 76034.91 2797.7 107.0 107.0 * * * 2698.6 51390.30 -428894 -245146 -59675 51595.52 51596.06 51577.96 51572.96 51573.35 51570.76 51766.29 51660.96 51661.45 94.10