code: private String[][] parsePS(String[] psStrings) {
      String[][] result = new String[psStrings.length-1][NUM_FIELDS];
      for (int i = 1; i < psStrings.length; i++) {
        Matcher matcher = psPattern.matcher(psStrings[i]);
        if (matcher.find()) {
          for (int j = 0; j < NUM_FIELDS; j++) {
            result[i-1][j] = matcher.group(j+1);
          }
        }
      }
      return result;
    }
docs: Parse PS results into fields
  @param psStrings
  @return fields contains the PS information