            {
                            label: 'Original Spread',
                            data: spreads.map((s, i) => ({ x: timestamps[i], y: s })),
                            borderColor: 'rgb(153, 102, 255)',
                            tension: 0.1
                        },
                        {
                            label: 'Centered Adjusted Spread',
                            data: centeredAdjustedSpreads.map((s, i) => ({ x: timestamps[i], y: s })),
                            border