urn:nasa:pds:mess_ns_derived:data_ddr:ns_ddr_ncp_tab 1.0 1.10.1.0 Product_Observational 2018-06-28 1.0 PDS4 migrated product. 2011-03-26T00:00:00Z 2012-02-25T23:59:59Z MESSENGER Mission urn:nasa:pds:context:investigation:mission.messenger data_to_investigation MESSENGER Spacecraft urn:nasa:pds:context:instrument_host:spacecraft.mess is_instrument_host Neutron Spectrometer Instrument urn:nasa:pds:context:instrument:ns.mess is_instrument Mercury Planet urn:nasa:pds:context:target:planet.mercury data_to_target Mercury Orbit 1/209585068 1/238701865 ns_ddr_ncp ns_ddr_gen 1.0 ns_ddr_ncp.tab 2013-05-25T19:49:14Z

0 2376 7-Bit ASCII Text The first eighteen records of this file are the header section. The header references information and column headings to improve usability.

2376 42 The NCP data product contains latitude-binned relative neutron count rates taken during the primary MESSENGER mission from 26 March 2011 to 25 February 2012. Specifically, these data are the exact data points given in Figure 2 and Figure 3A from Lawrence et al., Science, 339, 292-296, 2013. The delivered values include measured and simulated data for fast and epithermal neutron data within 2 degree wide latitude bins. The simulated data include two cases: one case assumes there is no hydrogen in Mercury’s north polar radar bright regions; the other case assumes that the north polar radar bright regions contain 100 wt.% H2O. Carriage-Return Line-Feed 13 0 132 latitude_bin 1 1 ASCII_Real 10 degree Latitude in degrees north at the midpoint of a 2-degree wide latitude bin. epi_sim_no_h 2 11 ASCII_Real 10 counts/second Simulated epithermal neutron data for the case of no hydrogen in the radar bright regions. epi_sim_no_h_std 3 21 ASCII_Real 10 counts/second Simulated epithermal neutron one-sigma uncertainties for the case of no hydrogen in the radar bright regions. epi_sim_yes_h 4 31 ASCII_Real 10 counts/second Simulated epithermal neutron data for the case of 100 wt percent water equivalent hydrogen in the radar bright regions. epi_sim_yes_h_std 5 41 ASCII_Real 10 counts/second Simulated epithermal neutron one-sigma uncertainties for the case of 100 wt percent water equivalent hydrogen in the radar bright regions. epi_data 6 51 ASCII_Real 10 counts/second Measured relative epithermal neutron counts. epi_std 7 61 ASCII_Real 10 counts/second Measured epithermal neutron one-sigma uncertainties. fast_sim_no_h 8 71 ASCII_Real 10 counts/second Simulated fast neutron data for the case of no hydrogen in the radar bright regions. fast_sim_no_h_std 9 81 ASCII_Real 10 counts/second Simulated fast neutron one-sigma uncertainties for the case of no hydrogen in the radar bright regions. fast_sim_yes_h 10 91 ASCII_Real 10 counts/second Simulated fast neutron data for the case of 100 wt percent water equivalent hydrogen in the radar bright regions. fast_sim_yes_h_std 11 101 ASCII_Real 10 counts/second Simulated fast neutron one-sigma uncertainties for the case of 100 wt percent water equivalent hydrogen in the radar bright regions. fast_data 12 111 ASCII_Real 10 counts/second Measured relative fast neutron counts. fast_std 13 121 ASCII_Real 10 counts/second easured fast neutron one-sigma uncertainties. ns_ddr_ncp.lbl 0 PDS3 Original PDS3 label Carriage-Return Line-Feed