| Therefore, if contour plots of X and Y are overlain, the point at which the X and Y zero isolines intersect indicates the pole. |
| From the incomplete data, it is impossible to draw accurate isolines of short duration rainfall amounts on maps of national scale. |
| A few representatives isolines are shown, to indicate the trend of runoff variation. |
| This is supported by the authors' observations on germplasm differences in sugar content between Bt maize and their isolines. |
| Whenever sufficient data were available for interpretation, isolines were drawn as solid lines. |
| These isolines are shown in Figure 2, on surface over the mineralized zones. |
