Validation of sea ice concentration - American sector
 Bulletin date: 2021-07-06
 Data source: OSI SAF N.H. sea ice concentration
 Model vs. observations, sea ice class contingency tables
 Date: 2021-07-06:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 524 | 2574 | 0 | 179 | 139 | 45 | 0 | 0 |  
| OW | 2 | 103 | 0 | 49 | 175 | 54 | 3 | 0 |  
| VODI | 0 | 155 | 0 | 116 | 376 | 460 | 56 | 0 |  
| ODI | 1 | 171 | 0 | 160 | 427 | 2395 | 505 | 6 |  
| CDI | 0 | 152 | 0 | 265 | 844 | 9622 | 3456 | 115 |  
| VCDI | 0 | 13 | 0 | 39 | 504 | 4693 | 6094 | 857 |  | 
 Date: 2021-07-08:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 90 | 3052 | 0 | 237 | 415 | 126 | 0 | 0 |  
| OW | 2 | 95 | 0 | 51 | 139 | 90 | 0 | 0 |  
| VODI | 3 | 148 | 0 | 95 | 353 | 583 | 46 | 0 |  
| ODI | 0 | 226 | 0 | 129 | 622 | 2557 | 434 | 0 |  
| CDI | 0 | 235 | 0 | 220 | 1293 | 10645 | 1843 | 2 |  
| VCDI | 0 | 120 | 0 | 25 | 528 | 9418 | 1503 | 4 |  | 
 Date: 2021-07-10:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 178 | 3030 | 0 | 250 | 410 | 147 | 0 | 0 |  
| OW | 0 | 116 | 0 | 48 | 130 | 124 | 0 | 0 |  
| VODI | 2 | 172 | 0 | 97 | 284 | 670 | 59 | 0 |  
| ODI | 0 | 295 | 0 | 184 | 529 | 3106 | 292 | 0 |  
| CDI | 0 | 196 | 0 | 232 | 1257 | 11921 | 1391 | 0 |  
| VCDI | 0 | 5 | 0 | 14 | 515 | 9052 | 623 | 0 |  | 
 Date: 2021-07-12:
 | Forecast | 
 | 
|  | observations |  
|  | Ice free | Ice free near MIZ
 | OW | VODI | ODI | CDI | VCDI near MIZ
 | VCDI |  
| m o
 d
 e
 l
 | Ice free | 877 | 2386 | 0 | 263 | 358 | 158 | 0 | 0 |  
| OW | 52 | 99 | 0 | 43 | 135 | 112 | 0 | 0 |  
| VODI | 62 | 195 | 0 | 112 | 391 | 708 | 6 | 0 |  
| ODI | 12 | 323 | 0 | 214 | 990 | 3477 | 126 | 0 |  
| CDI | 0 | 201 | 0 | 275 | 2296 | 11644 | 722 | 0 |  
| VCDI | 0 | 4 | 0 | 11 | 808 | 7142 | 1127 | 0 |  | 
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