| Tahun Data | : | 1998 |
| Nama Stasiun | : | TRMM-2230 |
| Lokasi Stasiun | : | Desa Ngancar, Kecamatan Pitu, Ngawi, Provinsi Jawa Timur |
| Longitude | : | 111.375000 |
| Latitude | : | -7.375000 |
| Tanggal | Jan | Feb | Mar | Apr | Mei | Jun | Jul | Agu | Sep | Okt | Nov | Des |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 0.000 | 0.000 | 11.353 | 23.846 | 4.682 | 2.624 | 0.000 | 0.000 | 0.000 | 3.142 | 5.775 | 0.946 |
| 2 | 0.296 | 0.000 | 4.150 | 0.312 | 4.844 | 0.000 | 13.236 | 2.092 | 0.000 | 0.000 | 18.862 | 0.000 |
| 3 | 0.206 | 9.352 | 3.320 | 0.187 | 0.000 | 1.355 | 6.349 | 0.000 | 0.912 | 0.000 | 7.983 | 12.581 |
| 4 | 5.646 | 37.973 | 4.802 | 0.000 | 5.589 | 0.720 | 0.619 | 0.000 | 0.000 | 0.000 | 44.577 | 2.838 |
| 5 | 0.000 | 27.490 | 18.616 | 0.000 | 4.641 | 15.323 | 30.965 | 0.000 | 0.000 | 0.000 | 47.102 | 0.000 |
| 6 | 5.260 | 25.017 | 6.907 | 3.662 | 1.705 | 0.487 | 19.720 | 0.000 | 0.000 | 9.891 | 29.494 | 23.193 |
| 7 | 2.418 | 19.669 | 8.567 | 42.011 | 0.095 | 0.000 | 9.873 | 0.756 | 0.000 | 4.794 | 1.713 | 0.000 |
| 8 | 0.000 | 9.446 | 41.411 | 0.000 | 6.441 | 0.190 | 0.000 | 0.000 | 0.444 | 0.000 | 0.989 | 0.000 |
| 9 | 10.738 | 19.010 | 25.493 | 15.127 | 0.230 | 0.381 | 0.000 | 0.000 | 0.000 | 0.000 | 0.848 | 0.000 |
| 10 | 0.000 | 1.602 | 1.364 | 6.034 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 0.000 | 3.709 | 0.000 |
| 11 | 0.000 | 7.750 | 25.611 | 44.425 | 14.966 | 0.000 | 8.582 | 0.000 | 0.000 | 40.248 | 0.000 | 0.000 |
| 12 | 2.315 | 0.141 | 7.144 | 1.831 | 0.095 | 10.222 | 0.000 | 0.000 | 0.000 | 12.187 | 0.000 | 0.000 |
| 13 | 1.672 | 0.000 | 4.002 | 20.891 | 0.000 | 0.825 | 0.000 | 0.000 | 0.000 | 8.501 | 11.109 | 0.000 |
| 14 | 0.604 | 1.720 | 14.762 | 13.109 | 0.000 | 2.476 | 0.000 | 0.000 | 0.000 | 10.394 | 0.000 | 5.293 |
| 15 | 0.977 | 44.804 | 66.785 | 39.681 | 5.724 | 52.551 | 0.000 | 0.000 | 0.000 | 0.000 | 6.234 | 19.025 |
| 16 | 46.850 | 0.707 | 16.926 | 0.000 | 0.189 | 1.693 | 0.000 | 0.000 | 0.000 | 4.009 | 8.389 | 21.556 |
| 17 | 26.930 | 47.042 | 0.623 | 1.061 | 2.097 | 2.349 | 0.188 | 0.000 | 1.676 | 0.000 | 0.000 | 22.477 |
| 18 | 4.797 | 3.981 | 7.974 | 2.809 | 0.000 | 6.751 | 0.000 | 0.000 | 1.454 | 1.773 | 27.110 | 49.735 |
| 19 | 10.134 | 18.068 | 19.090 | 1.623 | 0.000 | 0.000 | 0.000 | 0.000 | 1.676 | 1.430 | 16.990 | 51.883 |
| 20 | 7.009 | 56.912 | 2.253 | 2.372 | 0.000 | 4.339 | 1.587 | 1.162 | 0.000 | 5.157 | 1.731 | 31.887 |
| 21 | 5.530 | 1.932 | 6.136 | 1.477 | 0.000 | 6.815 | 0.000 | 0.000 | 3.105 | 14.383 | 5.157 | 38.023 |
| 22 | 1.209 | 26.619 | 14.347 | 8.823 | 0.000 | 1.164 | 12.160 | 0.000 | 0.000 | 0.403 | 3.267 | 3.938 |
| 23 | 13.966 | 5.677 | 2.638 | 3.766 | 0.000 | 8.191 | 8.932 | 8.398 | 2.588 | 4.069 | 0.000 | 0.179 |
| 24 | 11.947 | 24.663 | 0.385 | 32.127 | 0.000 | 16.868 | 0.000 | 0.000 | 4.116 | 0.000 | 0.265 | 3.171 |
| 25 | 7.253 | 28.432 | 3.053 | 8.157 | 0.000 | 0.000 | 0.000 | 0.000 | 4.461 | 2.719 | 0.000 | 16.442 |
| 26 | 0.604 | 5.371 | 1.868 | 70.705 | 0.000 | 24.572 | 13.801 | 6.393 | 23.905 | 9.709 | 0.424 | 19.408 |
| 27 | 3.459 | 12.626 | 9.871 | 0.000 | 0.000 | 4.318 | 0.000 | 2.499 | 5.570 | 0.403 | 15.612 | 7.927 |
| 28 | 2.894 | 48.385 | 10.286 | 18.020 | 0.000 | 2.138 | 37.772 | 0.785 | 0.000 | 21.917 | 6.411 | 29.304 |
| 29 | 7.948 | - | 9.723 | 11.819 | 0.000 | 0.000 | 7.264 | 0.000 | 0.000 | 24.253 | 0.000 | 2.327 |
| 30 | 4.128 | - | 48.703 | 9.051 | 0.000 | 0.000 | 2.825 | 0.000 | 0.000 | 6.486 | 12.875 | 7.748 |
| 31 | 10.468 | - | 5.099 | - | 0.000 | - | 0.000 | 0.000 | - | 38.495 | - | 17.260 |
| Total | 195.26 | 484.39 | 403.26 | 382.93 | 51.30 | 166.35 | 173.87 | 22.09 | 49.91 | 224.36 | 276.63 | 387.14 |
| Hari Hujan | 26.00 | 25.00 | 31.00 | 25.00 | 13.00 | 22.00 | 15.00 | 7.00 | 11.00 | 21.00 | 23.00 | 22.00 |
| Max | 46.850 | 56.912 | 66.785 | 70.705 | 14.966 | 52.551 | 37.772 | 8.398 | 23.905 | 40.248 | 47.102 | 51.883 |
| Avg | 6.30 | 17.30 | 13.01 | 12.76 | 1.65 | 5.55 | 5.61 | 0.71 | 1.66 | 7.24 | 9.22 | 12.49 |
Berdasarkan data hujan TRMM di Grid TRMM-2230, yang terletak di Desa Ngancar, Kecamatan Pitu, Ngawi, Provinsi Jawa Timur, curah hujan tahunan yang terjadi pada tahun 1998 adalah sebesar 2,817.48 mm. Dengan jumlah hari hujan tahunan adalah 241 hari (66.03%). Curah hujan harian maksimum tahunan yang tercatat adalah sebesar 70.71 mm yang terjadi pada tanggal 26 April 1998.
