| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 280 | 
                                    
                                    77.1%
                                 | 
| -7 | No electricity from a utility (spontaneous) | 0 | 
                                    
                                    0%
                                 | 
| 556 | 1 | 
                                    
                                    0.3%
                                 | |
| 565 | 1 | 
                                    
                                    0.3%
                                 | |
| 566 | 1 | 
                                    
                                    0.3%
                                 | |
| 578 | 1 | 
                                    
                                    0.3%
                                 | |
| 656 | 1 | 
                                    
                                    0.3%
                                 | |
| 684 | 1 | 
                                    
                                    0.3%
                                 | |
| 700 | 2 | 
                                    
                                    0.6%
                                 | |
| 714 | 1 | 
                                    
                                    0.3%
                                 | |
| 736 | 1 | 
                                    
                                    0.3%
                                 | |
| 785 | 1 | 
                                    
                                    0.3%
                                 | |
| 794 | 1 | 
                                    
                                    0.3%
                                 | |
| 839 | 1 | 
                                    
                                    0.3%
                                 | |
| 873 | 1 | 
                                    
                                    0.3%
                                 | |
| 882 | 1 | 
                                    
                                    0.3%
                                 | |
| 913 | 1 | 
                                    
                                    0.3%
                                 | |
| 1000 | 2 | 
                                    
                                    0.6%
                                 | |
| 1080 | 1 | 
                                    
                                    0.3%
                                 | |
| 1101 | 1 | 
                                    
                                    0.3%
                                 | |
| 1139 | 1 | 
                                    
                                    0.3%
                                 | |
| 1249 | 1 | 
                                    
                                    0.3%
                                 | |
| 1274 | 1 | 
                                    
                                    0.3%
                                 | |
| 1312 | 1 | 
                                    
                                    0.3%
                                 | |
| 1410 | 1 | 
                                    
                                    0.3%
                                 | |
| 1477 | 1 | 
                                    
                                    0.3%
                                 | |
| 1492 | 1 | 
                                    
                                    0.3%
                                 | |
| 1500 | 4 | 
                                    
                                    1.1%
                                 | |
| 1504 | 1 | 
                                    
                                    0.3%
                                 | |
| 1539 | 1 | 
                                    
                                    0.3%
                                 | |
| 1560 | 1 | 
                                    
                                    0.3%
                                 | |
| 1640 | 1 | 
                                    
                                    0.3%
                                 | |
| 1962 | 1 | 
                                    
                                    0.3%
                                 | |
| 2000 | 2 | 
                                    
                                    0.6%
                                 | |
| 2347 | 1 | 
                                    
                                    0.3%
                                 | |
| 2472 | 1 | 
                                    
                                    0.3%
                                 | |
| 2500 | 2 | 
                                    
                                    0.6%
                                 | |
| 2525 | 1 | 
                                    
                                    0.3%
                                 | |
| 2750 | 1 | 
                                    
                                    0.3%
                                 | |
| 2935 | 2 | 
                                    
                                    0.6%
                                 | |
| 3000 | 1 | 
                                    
                                    0.3%
                                 | |
| 3140 | 1 | 
                                    
                                    0.3%
                                 | |
| 3417 | 1 | 
                                    
                                    0.3%
                                 | |
| 3456 | 1 | 
                                    
                                    0.3%
                                 | |
| 3756 | 1 | 
                                    
                                    0.3%
                                 | |
| 4000 | 2 | 
                                    
                                    0.6%
                                 | |
| 4029 | 1 | 
                                    
                                    0.3%
                                 | |
| 4590 | 1 | 
                                    
                                    0.3%
                                 | |
| 4630 | 1 | 
                                    
                                    0.3%
                                 | |
| 5000 | 1 | 
                                    
                                    0.3%
                                 | |
| 5046 | 1 | 
                                    
                                    0.3%
                                 | |
| 5151 | 1 | 
                                    
                                    0.3%
                                 | |
| 5345 | 1 | 
                                    
                                    0.3%
                                 | |
| 6000 | 1 | 
                                    
                                    0.3%
                                 | |
| 6577 | 1 | 
                                    
                                    0.3%
                                 | |
| 7975 | 1 | 
                                    
                                    0.3%
                                 | |
| 8000 | 1 | 
                                    
                                    0.3%
                                 | |
| 8340 | 1 | 
                                    
                                    0.3%
                                 | |
| 8856 | 1 | 
                                    
                                    0.3%
                                 | |
| 9100 | 1 | 
                                    
                                    0.3%
                                 | |
| 10000 | 2 | 
                                    
                                    0.6%
                                 | |
| 10440 | 1 | 
                                    
                                    0.3%
                                 | |
| 14400 | 1 | 
                                    
                                    0.3%
                                 | |
| 15520 | 1 | 
                                    
                                    0.3%
                                 | |
| 16000 | 1 | 
                                    
                                    0.3%
                                 | |
| 16646 | 1 | 
                                    
                                    0.3%
                                 | |
| 18952 | 1 | 
                                    
                                    0.3%
                                 | |
| 22000 | 1 | 
                                    
                                    0.3%
                                 | |
| 26520 | 1 | 
                                    
                                    0.3%
                                 | |
| 27703 | 1 | 
                                    
                                    0.3%
                                 | |
| 28519 | 1 | 
                                    
                                    0.3%
                                 | |
| 37680 | 1 | 
                                    
                                    0.3%
                                 | |
| 47600 | 1 | 
                                    
                                    0.3%
                                 | |
| 49600 | 1 | 
                                    
                                    0.3%
                                 | |
| 52938 | 1 | 
                                    
                                    0.3%
                                 |