   data: [],
            backgroundColor: 'rgba(54, 162, 235, 0.6)'
          }]
        },
        options: {
          scales: { y: { beginAtZero: true } }
        }
      }
    );
    
    const protocolChart = new Chart(
      document.getElementById('protocolChart').getContext('2d'), {
        type: 'pie',
        data: {
          labels: [],
          datasets: [{
            data: [],
            backgroundColor: [
              'rgba(255, 99, 132, 0.6)',
              'rgba(54, 162, 235, 0.6)',
   