        'line-color': '#000000',
            'line-width': {
              'stops': [
                [0, 0.3],
                [1, 0.3],
                [2, 0.3],
                [3, 0.4],
                [4, 0.35],
                [5, 0.4],
                [6, 0.25],
                [7, 0.3],
                [8, 0.5],
                [9, 0.7],
                [10, 0.6],
                [11, 0.9],
                [12, 1.1],
                [13, 1.5],
                [14, 2.5],
                [15, 3],
    