These data are the first products migrated from the New Horizons PDS3 mission 
phases into PDS4 format. They are certified for use, but there are some minor 
errata discovered in the labels during validation and acceptance testing that 
will be corrected prior to archiving. These are:

* Some data products indicate a target type of "Calibrator", but are in fact 
  of type Calibration Field, which is used for calibration, not an onboard 
  calibration source. These will be corrected.

* The context object names appearing in the product labels are not 
  character-by-character identical with the names defined by the context 
  objects. The names in the product labels will be updated to meet this new 
  requirement.

* The New Horizons team has frozen on PDS4 schema version 1.19.0.0. 
  (aka "1J00") for their current PDS4 deliveries, and SBN matched that version
  for the migration. Some products indirectly reference later versions of the 
  PDS4 schema (through, for example, discipline dictionaries that are built on
  later PDS schema versions). While this has no impact on the interpretation 
  of the New Horizons label content, it can cause processing warnings about 
  a "multiply defined namespace" in some situations. The schema location 
  "hints" in some products will change to reflect the "1J00" file references 
  once the requisite files have been generated by the PDS Engineering Node.

Also note:

* In the data labels, the <geom:horizontal_pixel_field_of_view> and 
  <geom:vertical_pixel_field_of_view> were stated in units of microradians. 
  This unit is not available in the PDS4 1J00 schema. The values have been 
  converted to milliradians,

* The JPG thumbnails provided for the raw and calibrated LORRI data have not 
  been included in this initial version of the PDS4 data, because it is not 
  yet clear how these will be incorporated into the new, unified PDS web site 
  and data search currently under construction. They will be included in a 
  subsequent revision when the necessary label support has been identified.