diff --git a/aocsync.py b/aocsync.py
index e287076..dc10cee 100755
--- a/aocsync.py
+++ b/aocsync.py
@@ -1052,21 +1052,66 @@ class HTMLGenerator:
             text-decoration: underline;
         }}
         
-        .history-data {{
+        .modal {{
             display: none;
-            margin-top: 5px;
-            padding: 5px;
-            background: #f0f0f0;
-            border-radius: 4px;
-            font-size: 0.8em;
+            position: fixed;
+            z-index: 1000;
+            left: 0;
+            top: 0;
+            width: 100%;
+            height: 100%;
+            overflow: auto;
+            background-color: rgba(0,0,0,0.5);
         }}
         
-        .history-data.show {{
+        .modal.show {{
             display: block;
         }}
         
+        .modal-content {{
+            background-color: #fefefe;
+            margin: 5% auto;
+            padding: 20px;
+            border: 1px solid #888;
+            border-radius: 8px;
+            width: 80%;
+            max-width: 600px;
+            max-height: 80vh;
+            overflow-y: auto;
+            position: relative;
+        }}
+        
+        .modal-header {{
+            display: flex;
+            justify-content: space-between;
+            align-items: center;
+            margin-bottom: 15px;
+            padding-bottom: 10px;
+            border-bottom: 2px solid #667eea;
+        }}
+        
+        .modal-title {{
+            font-size: 1.2em;
+            font-weight: bold;
+            color: #333;
+        }}
+        
+        .modal-close {{
+            color: #aaa;
+            font-size: 28px;
+            font-weight: bold;
+            cursor: pointer;
+            line-height: 20px;
+        }}
+        
+        .modal-close:hover,
+        .modal-close:focus {{
+            color: #000;
+            text-decoration: none;
+        }}
+        
         .history-item {{
-            padding: 2px 0;
+            padding: 8px 0;
             border-bottom: 1px solid #ddd;
         }}
         
@@ -1115,11 +1160,26 @@ class HTMLGenerator:
         }}
     </style>
     <script>
-        function toggleHistory(user, year, day, part) {{
+        function showHistory(user, year, day, part) {{
             const id = `history-${{user}}-${{year}}-${{day}}-${{part}}`;
-            const elem = document.getElementById(id);
-            if (elem) {{
-                elem.classList.toggle('show');
+            const modal = document.getElementById(id);
+            if (modal) {{
+                modal.classList.add('show');
+            }}
+        }}
+        
+        function closeHistory(user, year, day, part) {{
+            const id = `history-${{user}}-${{year}}-${{day}}-${{part}}`;
+            const modal = document.getElementById(id);
+            if (modal) {{
+                modal.classList.remove('show');
+            }}
+        }}
+        
+        // Close modal when clicking outside of it
+        window.onclick = function(event) {{
+            if (event.target.classList.contains('modal')) {{
+                event.target.classList.remove('show');
             }}
         }}
     </script>
@@ -1182,8 +1242,10 @@ class HTMLGenerator:
                             if not user_info[user]['repo_url']:
                                 user_info[user]['repo_url'] = time_data.get('repo_url', '')
             
-            # Find fastest times per day/part for highlighting
+            # Find fastest and slowest times per day/part for highlighting and speed multiple
             fastest_times = {}
+            slowest_times = {}
+            speed_multiples = {}
             for day, part in day_part_combos:
                 part_data = data[year][day][part]
                 times = []
@@ -1196,6 +1258,11 @@ class HTMLGenerator:
                         times.append(total_time)
                 if times:
                     fastest_times[(day, part)] = min(times)
+                    slowest_times[(day, part)] = max(times)
+                    if fastest_times[(day, part)] > 0:
+                        speed_multiples[(day, part)] = slowest_times[(day, part)] / fastest_times[(day, part)]
+                    else:
+                        speed_multiples[(day, part)] = 0
             
             # Create table with transposed structure
             html += """
@@ -1220,7 +1287,8 @@ class HTMLGenerator:
                 
                 html += f'                        <th>{user}{git_rev_html}</th>\n'
             
-            html += """                    </tr>
+            html += """                        <th>Speed Multiple</th>
+                    </tr>
                 </thead>
                 <tbody>
 """
@@ -1229,7 +1297,8 @@ class HTMLGenerator:
             for day, part in day_part_combos:
                 part_data = data[year][day][part]
                 fastest_time = fastest_times.get((day, part), 0)
-                row_history_htmls = []
+                speed_multiple = speed_multiples.get((day, part), 0)
+                row_history_modals = []
                 
                 html += f"""
                     <tr>
@@ -1291,25 +1360,44 @@ class HTMLGenerator:
                                 
                                 hist_git = hist.get('git_rev', '')[:7] if hist.get('git_rev') else '-'
                                 hist_date = hist.get('timestamp', '')[:16] if hist.get('timestamp') else ''
-                                history_items.append(f'<div class="history-item">{hist_date}: {hist_time_str} ({hist_git})</div>')
+                                hist_repo_url = hist.get('repo_url', '')
+                                if hist_git != '-' and hist_repo_url:
+                                    hist_git_link = f'<a href="{hist_repo_url.rstrip("/")}/commit/{hist.get("git_rev", "")}" target="_blank">{hist_git}</a>'
+                                else:
+                                    hist_git_link = hist_git
+                                history_items.append(f'<div class="history-item">{hist_date}: {hist_time_str} ({hist_git_link})</div>')
                             
-                            history_html = f'''
-                                <div class="history-data" id="history-{user}-{year}-{day}-{part}">
-                                    <strong>History:</strong>
-                                    {''.join(history_items)}
+                            history_modal = f'''
+                                <div id="history-{user}-{year}-{day}-{part}" class="modal">
+                                    <div class="modal-content">
+                                        <div class="modal-header">
+                                            <div class="modal-title">History: {user} - Year {year} Day {day} Part {part}</div>
+                                            <span class="modal-close" onclick="closeHistory('{user}', {year}, {day}, {part})">&times;</span>
+                                        </div>
+                                        <div>
+                                            {''.join(history_items)}
+                                        </div>
+                                    </div>
                                 </div>
                                 '''
-                            row_history_htmls.append(history_html)
-                            history_link = f' <span class="history-link" onclick="toggleHistory(\'{user}\', {year}, {day}, {part})">📊</span>'
+                            row_history_modals.append(history_modal)
+                            history_link = f' <span class="history-link" onclick="showHistory(\'{user}\', {year}, {day}, {part})">📊</span>'
                         
                         html += f'                        <td class="time {cell_class}">{total_str}{history_link}</td>\n'
                 
+                # Add speed multiple column
+                if speed_multiple > 0:
+                    speed_multiple_str = f"{speed_multiple:.2f}x"
+                else:
+                    speed_multiple_str = "-"
+                html += f'                        <td class="time">{speed_multiple_str}</td>\n'
+                
                 html += """                    </tr>
 """
                 
-                # Add history HTML after the row
-                for hist_html in row_history_htmls:
-                    html += hist_html
+                # Add history modals after the row
+                for hist_modal in row_history_modals:
+                    html += hist_modal
             
             html += """                </tbody>
             </table>