       legend: {
                        y: 'top',
                        data: ['北京', '上海', '广州'],
                        textStyle: {
                            color: '#fff',
                            fontSize: 20
                        }
                    },
                    grid: {
                        left: '10%',
                        right: 200,
                        top: '15%',
                        bottom: '10%'
                    },
                    tooltip: {
