Results
| Country: | Brasil
| | Station: | Ji-parana | | River: | Ji-parana | | Area: | 32806 km2 | | Lat: | -10.88 | | Lon: | -61.95 | | Source: | ANEEL | | PointID: | 28 | | Area Units: | km2 | | Discharge Units: | m3/sec | | Starting Year: | 1978 | | Ending Year: | 1996 | | Total Years: | 19 | | Total Usable Years: | 17 | |
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| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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| 1978 | 1357 | 1321 | 1988 | 1381 | 838 | 536 | 326 | 221 | 205 | 228 | 350 | 1240 | 832.58 |
| 1979 | 1483 | 1595 | 1758 | 1246 | 654 | 410 | 268 | 201 | 216 | 185 | 295 | 329 | 720 |
| 1980 | 497 | 1222 | 1698 | 1050 | 527 | 322 | 236 | 176 | 161 | 187 | 226 | 465 | 563.92 |
| 1981 | 886 | 1166 | 1611 | 973 | 485 | 314 | 211 | 165 | 155 | 202 | 401 | 681 | 604.17 |
| 1982 | 1793 | 1768 | 1561 | 1185 | 621 | 359 | 260 | 215 | 225 | 242 | 332 | 402 | 746.92 |
| 1983 | 666 | 1038 | 1252 | 1036 | 429 | 291 | 196 | 155 | 137 | 165 | 349 | 561 | 522.92 |
| 1984 | 1173 | 1140 | 1314 | 1340 | 746 | 385 | 242 | 179 | 174 | 206 | 407 | 646 | 662.67 |
| 1985 | 1155 | 1329 | 1461 | 1449 | 869 | 398 | 281 | 195 | 210 | 298 | 467 | 792 | 742 |
| 1986 | 1818 | 1729 | 2099 | 1351 | 775 | 515 | 305 | 274 | 268 | 275 | 290 | 462 | 846.75 |
| 1987 | 695 | 887 | 1334 | 859 | 507 | 311 | 211 | 164 | 155 | 181 | 387 | 671 | 530.17 |
| 1988 | 1376 | 1677 | 1837 | 1218 | 661 | 389 | 258 | 187 | 172 | 198 | 293 | 724 | 749.17 |
| 1989 | 1277 | 2263 | 1444 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 |
| 1990 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | -9999 | 341 | 626 | -9999 |
| 1991 | 1355 | 1672 | 1614 | 1578 | 970 | 483 | 318 | 254 | 209 | 386 | 614 | 641 | 841.17 |
| 1992 | 985 | 1383 | 1545 | 842 | 488 | -9999 | -9999 | -9999 | -9999 | 225 | 335 | 588 | -9999 |
| 1993 | 1561 | 2056 | 1643 | 1140 | 617 | 337 | -9999 | -9999 | 195 | 224 | 345 | 992 | -9999 |
| 1994 | 1373 | 1831 | 1153 | 1203 | 643 | 396 | 308 | 221 | 223 | 256 | 293 | 676 | 714.67 |
| 1995 | 1224 | 1733 | 1286 | 1104 | 785 | 382 | 269 | 194 | 185 | 238 | 405 | 1152 | 746.42 |
| 1996 | 1754 | 1569 | 1804 | 1287 | 716 | 399 | 275 | 229 | 205 | 231 | 490 | 521 | 790 |
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| Avg | 1246 | 1521.06 | 1577.89 | 1190.71 | 666.53 | 389.19 | 264.27 | 202 | 193.44 | 231 | 367.78 | 676.06 | 707.57 |
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| Std Dev | 373.49 |
351.88 |
252.27 |
195.09 |
147.23 |
69.13 |
38.63 |
32.74 |
32.43 |
51.34 |
87.14 |
235.2 |
104.8 |
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| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Avg Annual |
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