t
                    });

                    return rectShape && {
                        type: 'rect',
                        shape: rectShape,
                        style: api.style()
                    };
                }

                option = {
                    tooltip: {
                        formatter: function (params) {
                            return params.marker + params.name + ': ' + params.value[3] + ' ms';
                        }
                    },
                   