private String _readFloatValue(NSDictionary dict, String key) {
   String value = dict.getStrValue(key);
   return value != null
       ? s_df.format(Double.parseDouble(value) / 1000.0).replace('.', ',')
       : "-00.00";
 }
 private String _readValue(NSDictionary dict, String key) {
   String value = dict.getStrValue(key);
   return value != null ? value : NULL_VALUE;
 }