| Square Feet/Degrees | 10˚ | 20˚ | 30˚ |
|---|---|---|---|
| 400 | 8,640 | 18,560 | 30,000 |
| 800 | 17,280 | 37,120 | 60,000 |
| 1,200 | 25,920 | 55,680 | 90,000 |
| 1,600 | 34,560 | 74,240 | 120,000 |
| 2,000 | 43,200 | 92,800 | 150,000 |
| 2,800 | 60,480 | 129,920 | 210,000 |
| 3,200 | 69,120 | 148,480 | 240,000 |
| 3,600 | 77,760 | 167,040 | 270,000 |
| 4,000 | 86,400 | 185,600 | 300,000 |
| 4,400 | 95,040 | 204,160 | 330,000 |
| 4,800 | 103,680 | 222,720 | 360,000 |
| 5,200 | 112,320 | 241,280 | 390,000 |
| 5,600 | 120,960 | 259,840 | 420,000 |
| 6,000 | 129,600 | 278,400 | 450,000 |
| 6,400 | 138,240 | 396,960 | 480,000 |
| 6,800 | 146,880 | 315,520 | 510,000 |
| 7,200 | 155,520 | 334,080 | 540,000 |
| 7,600 | 164,160 | 352,640 | 570,000 |
| 8,000 | 172,800 | 371,200 | 600,000 |
| 8,400 | 181,440 | 389,760 | 630,000 |
| 8,800 | 190,080 | 408,320 | 660,000 |
| 9,200 | 198,720 | 426,880 | 690,000 |
| 9,600 | 207,360 | 445,440 | 720,000 |
| 10,000 | 216,000 | 464,000 | 750,000 |