urn:nasa:pds:vl_seis_derived:data_derived:high_wind_summary 1.0 1.21.0.0 Product_Observational 2024-05-03 1.0 Initial version. 1976-09-04T00:53:01Z 1978-03-16T23:35:35Z Viking Mission urn:nasa:pds:context:investigation:mission.viking data_to_investigation Viking Lander 2 Host urn:nasa:pds:context:instrument_host:spacecraft.vl2 is_instrument_host Seismometer for VL2 Instrument urn:nasa:pds:context:instrument:seis.vl2 is_instrument Mars Planet urn:nasa:pds:context:target:planet.mars data_to_target high_rate Primary_Mission Extended_Mission 0 560 high_wind_summary.tab 2016-12-12 0 47361 This file is a summary of the Viking Seismometer Data High Rate records, intended as a high-level index to events of interest, and for large-scale correlation with meteorological data. For details see VPDS_HIGH_WINDS_FORMAT.TXT in the DOCUMENT directory. Time is Local Lander Time. Carriage-Return Line-Feed 24 0 167 archived_record_number 1 1 ASCII_Integer 7 An ordinal number indicating the record in the present file and in the corresponding archive files (VPDS_HIGH_XDAT.CSV etc.). Note that those files only carry the records with 51 readings, hence there are fewer records in the archive file than in the present summary. seismic_time_sols 2 8 ASCII_Real 12 The mission time in decimal Sols (i.e. sol+(hr*3600.0+min*60.0+sec)/88775.0). original_file_number 3 20 ASCII_Integer 6 The file number of the original data (i.e. file number 0101 corresponds to VUSA.0101). original_record_number 4 26 ASCII_Integer 7 The line number in the original VUSA file to which the present record corresponds. data_acquisition_sol 5 33 ASCII_Integer 4 The sol number on which the data were acquired. Landing day is sol 0. data_acquisition_hour 6 37 ASCII_Integer 4 The hour of acquisition end. data_acquisition_minute 7 41 ASCII_Integer 4 The minute of acquisition end. data_acquisition_second 8 45 ASCII_Integer 4 he second of acquisition end. Note that high rate data are acquired at 20.2 Hz, thus the 83-sample record corresponds to about 4 seconds. mean_x_axis 9 49 ASCII_Real 9 The mean of the X-axis readings. 1 digital unit (DU) corresponds roughly to 2nm at 3Hz (see seismic_dataset.txt). variance_x_axis 10 58 ASCII_Real 9 The variance of the X-axis readings. skew_x_axis 11 67 ASCII_Real 9 The skew of the X-axis readings, or -99.99 if undefined. -99.99 kurtosis_x_axis 12 76 ASCII_Real 9 The kurtosis of the X-axis readings, or -99.99 if undefined. -99.99 minimum_x_axis 13 85 ASCII_Integer 5 The minimum X-axis reading in the record. maximum_x_integer 14 90 ASCII_Real 5 The maximum X-axis reading in the record. minimum_y_axis 15 95 ASCII_Integer 5 The minimum Y-axis reading in the record. maximum_y_axis 16 100 ASCII_Integer 5 The maximum Y-axis reading in the record. minimum_z_axis 17 105 ASCII_Integer 5 The minimum Z-axis reading in the record. maximum_z_axis 18 110 ASCII_Integer 5 The maximum Z-axis reading in the record. meteo_time_sols 19 115 ASCII_Real 12 The mission time in decimal Sols (i.e. sol+(hr*3600.0+min*60.0+sec)/88775.2) corresponding to the closest meteorology data. nearest_windspeed 20 127 ASCII_Real 7 m/sec Closest windspeed measurement(m/s). nearest_pressure 21 134 ASCII_Real 7 mbar Closest pressure (mbar). nearest_wind_direction 22 141 ASCII_Real 8 deg Closest wind direction (towards which the wind is blowing, degrees clockwise from North. nearest_air_temperature 23 149 ASCII_Real 8 K Closest air temperature (K). Note that this value has not been screened for possible lander thermal contamination (see Hess et al. 1977; doi:10.1029/JS082i028p04559). wind_seismic_interval 24 157 ASCII_Integer 9 sec Time in seconds between closest wind measurement and the end of the seismic record (for the first and last sol of the file, this value should be ignored). Positive means seismic data obtained after meteorology. high_wind_summary.lbl 0 PDS3 Original PDS3 label. Carriage-Return Line-Feed