| −36 | −24 | −12 | 0 | 12 | 24 | 36 |
−18 | 1500 | 1500 | 1000 | 1000 | 500 | 0 | 0 |
−12 | 1500 | 1500 | 1000 | 500 | 500 | 0 | −500 |
−6 | 1500 | 1000 | 1000 | 500 | 0 | −500 | −500 |