Research Article
Comparison of Statistical Methods to Graphical Methods in Rainfall Trend Analysis: Case Studies from Tropical Catchments
Table 3
Comparison results for seasonal rainfalls for Uma Oya catchment.
| | Raingauge station | Season | Statistical trend analysis [32] | Graphical trend analysis |
| | Dyrabba estate | 1st | No trend | No trend | | NE | No trend | No trend | | 2nd | No trend | No trend | | SW | No trend | No trend |
| | Hilpankandura estate | 1st | No | Yes—upward | | NE | No trend | No trend | | 2nd | No trend | No trend | | SW | No trend | No trend |
| | Kirklees estate | 1st | Yes—upward | Yes—upward | | NE | No trend | No trend | | 2nd | No trend | No trend | | SW | No trend | No trend |
| | Ledgerwatte estate | 1st | Yes—upward | Yes—upward | | NE | No trend | No trend | | 2nd | No trend | No trend | | SW | No | Yes—upward |
| | Welimada group | 1st | Yes—upward | Yes—slightly upward | | NE | No trend | No trend | | 2nd | No trend | No trend | | SW | No trend | No trend |
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