let padAngle = 0;
            let minAngle = 0;

            const seriesList = [];

            let index = 0;

            for (let i = 0; i < step; i++) {
                for (let j = 0; j < step; j++) {
                    const canvas = document.createElement('div');

                    seriesList.push({
                        type: 'pie',
                        radius: ['40%', '70%'],
                        avoidLabelOverlap: false,
                        padAngle: j * interval,
                 