Galileo EPD Pre-Jupiter Raw Bundle                                              
                                                                                  
  Galileo EPD Pre-Jupiter Edited Raw Earth1 Count Rate Data Collection            
                                                                                  
  PDS3 DATA_SET_ID                 = GO-E-EPD-2-SAMP-EARTH1-PAD-V1.0              
  PDS3 DATA_SET_NAME               =                                              
  GO EARTH EPD EDITED SAMPLE EARTH1 PITCH ANGLE DIST V1.0                         
  START_TIME                       = 1990-12-08T06:00:12                          
  STOP_TIME                        = 1990-12-08T23:58:51                          
  PDS3 DATA_SET_RELEASE_DATE       = 1995-02-22                                   
  PRODUCER_FULL_NAME               = CHRISTOPHER R. BRULL                         
                                                                                  
  References:                                                                     
  GO EARTH EPD EDITED SAMPLE EARTH1 PITCH ANGLE DIST V1.0,                        
  GO-E-EPD-2-SAMP-EARTH1-PAD-V1.0, NASA Planetary Data System, 1995               
                                                                                  
  These data were originally archived in the following PDS3 data set:             
  GO-E-EPD-2-SAMP-EARTH1-PAD-V1.0 (https://doi.org/10.17189/1519637).             
                                                                                  
  Collection Overview                                                             
  =================                                                               
  This collection contains count rate data for the                                
  energetic particle detector obtained from the LEMMS and                         
  CMS telescopes during the time of significant activity                          
  during the Earth1 encounter on day 342, 1990.                                   
                                                                                  
  A data file record contains count rate data for a particular                    
  LEMMS or CMS channel.  Also included are pitch and phase angles                 
  of the particles counted by the detectors.  The angles are determined           
  in a coordinate system defined by the magnetic field (magnetic field            
  data provided by Steve Joy) and the position of Earth (calculated with          
  SPICE kernel data).  The z-axis of the coordinate system points along           
  the magnetic field.  The x-axis is chosen so Earth lies in the xz               
  plane.  The pitch angle is the angle between the sector look direction          
  and the z-axis.  The phase angle is the angle between x-axis and the            
  projection of the x-axis on the xy plane.  During the encounter, the            
  stepper motor was moving from position zero thru five.  Steps one               
  through five are reported in this collection. The rates reported are in         
  units of counts/sec.  Pitch and phase angles are recorded in radians.           
                                                                                  
  NOTE                                                                            
                                                                                  
  Data in this collection includes only that data which has                       
  valid data flag markers as a result of processing done by the Galileo           
  Energetic Particles Detector Archive Processor. Invalid                         
  data are marked by a -1.0 in the rate column of the invalid data.               
                                                                                  
  Depending on the tools used for EPD data analysis, it is possible to encounter  
  the pitch angle of the detector being substituted for the pitch angle of the    
  charged particles. For example, in Figure 4 of Williams et al. (1998),          
  J. Geophys. Res., 103, 17,523-17,534, the authors show a loss at 0 deg PA,      
  which if viewed carefully must be at 180 deg PA. It is therefore useful to      
  exercise caution with pitch angles in the EPD data, depending on how the data   
  are obtained.