MEX-M-ASPERA3-2-EDR-IMA-EXT1

Overview: The Ion Mass Analyzer (IMA) provides in situ ion measurements in the energy range 0.01 40 keV/q for the main ion components H+, He++, He+, O+, with 2080 amu/q to help satisfy the following scientific objectives: 1. Determine the instantaneous global distributions of plasma and neutral gas near Mars by providing undisturbed solar wind parameters 2. Define the local characteristics of the main plasma regions 3. Complement the ENA images Parameters: All IMA data products have the same format and parameters, and each row (data file record) in the IMA SPREADSHEET data products has seven (7) COLUMN objects (parameters): 1. Start Time Begin Date/Time in UTC of data samples 2. Stop Time Ending Date/Time in UTC of data samples 3. Data Type Name SENSOR or MODE. The SENSOR rows are the IMA science data for each mass channel (32 channels). The 32 SENSOR rows are followed by 10 rows of MODE data for the same time period. The MODE rows contain informational data such Mask indicators, Indexes, and Summations. 4. Data Type Id Numeric ID indicating SENSOR or MODE. 5. Data Name Short description for data on that row. For example Mass Channel x where x 031 to indicate the mass channel in the SENSOR rows or Polar Angle Index for informational data (MODE row). 6. Data Unit Indicates the data unit (c/acc for SENSOR data, unitless for MODE data). 7. Values These are the actual data values. For this column there are multiple values as indicated by the ITEMS keyword in the label files. For IMA data, there are 96 ITEMS. In the SENSOR rows, these are the science data sampled for each energy step starting at 0 and ending at 95. The MODE data rows contain only one value each with remaining ITEMS indicated as missing with nothing between the commas (value,,...,,). Please note that the data values are formatted for best accuracy and that this is not the accuracy of the IMA instrumentation. In add truncated!, Please see actual [truncated!, Please see actual data for full text]