# Technical Document Extraction: Line Chart Analysis
## 1. Chart Type and Structure
- **Chart Type**: Line chart with square markers
- **Axes**:
- **X-axis**: "Number of Patches" (linear scale, 1 to 40)
- **Y-axis**: "Pass Rate (%)" (linear scale, 47% to 53%)
- **Legend**: Located at top-right corner (color: green, label: "Pass Rate" inferred from context)
## 2. Data Points and Trends
- **Visual Trend**: Steady upward slope from left to right
- **Data Points** (x, y):
- [1, 48.0] (green square)
- [5, 49.2] (green square)
- [10, 50.2] (green square)
- [20, 51.2] (green square)
- [40, 51.6] (green square)
- **Trend Verification**:
- Slope increases consistently (Δy/Δx ≈ 0.3% per patch increment)
- Final segment (20→40 patches) shows decelerated growth (Δy ≈ 0.4% over 20 patches)
## 3. Spatial Grounding
- **Legend Position**: [x: 90%, y: 10%] (top-right corner)
- **Data Point Colors**: All points match legend color (green)
- **Axis Labels Position**:
- X-axis label: Bottom center
- Y-axis label: Left center
## 4. Component Isolation
### Header
- No explicit title present
### Main Chart
- **Line Characteristics**:
- Color: Forest green (#228B22)
- Line style: Solid
- Marker style: Square (filled)
- **Grid**:
- Dashed gray lines
- Major ticks every 1 unit (x-axis) and 1% (y-axis)
### Footer
- No additional elements
## 5. Data Table Reconstruction
| Number of Patches | Pass Rate (%) |
|-------------------|---------------|
| 1 | 48.0 |
| 5 | 49.2 |
| 10 | 50.2 |
| 20 | 51.2 |
| 40 | 51.6 |
## 6. Cross-Reference Validation
- All data points match legend color (green)
- Y-axis percentage values align with chart scale
- X-axis patch counts correspond to horizontal positioning
## 7. Additional Observations
- **Data Range**:
- X: 1–40 patches
- Y: 48.0–51.6%
- **Growth Pattern**:
- Initial rapid improvement (48.0→50.2 in first 10 patches)
- Diminishing returns after 10 patches (50.2→51.6 over 30 patches)
- **Scale Consistency**:
- Y-axis increments match data point spacing
- X-axis logarithmic spacing not evident (linear progression)
## 8. Language Declaration
- All text in English. No foreign language elements detected.
