anchor.diff:        clientCity: "unknown location",
         clientCityError: null,
         recentResults: [],
  -      myResults: [{distance_km:2500.0, lag_ms:100.0}],
  +      myResults: [],
         resultsError: null
       };
     },
  
positive.code:           }
          },
          success: function(data) {
            this.setState({
              buttonValue: ping.pingButton,
              resultValue: "",
              progressValue: "",
              error: null
            });
          }.bind(this),
          error: function(xhr, status, err) {
  
negative.code:           msec
          </form>
        <PingResultError error={this.state.error} />
        <PlotBox
          recentResults={recentResults}
          myResults={myResults}
        />
        </div>
      );
    }
  