Validation of sea ice concentration
 Bulletin date: 2011-04-13
 Model vs. observations, sea ice class contingency tables
 Date: 2011-04-07:
 | Best estimate | Forecast | 
 | 
|  | observations |  
|  | water | VODI | ODI | CDI | VCDI |  
| m o
 d
 e
 l
 | water | 19459 | 471 | 376 | 412 | 147 |  
| VODI | 111 | 70 | 113 | 248 | 160 |  
| ODI | 63 | 49 | 114 | 190 | 226 |  
| CDI | 54 | 32 | 111 | 385 | 528 |  
| VCDI | 32 | 40 | 87 | 872 | 13069 |  | ...date precedes bulletin | 
 Date: 2011-04-11:
 | Best estimate | Forecast | 
 | 
|  | observations |  
|  | water | VODI | ODI | CDI | VCDI |  
| m o
 d
 e
 l
 | water | 19792 | 333 | 265 | 241 | 187 |  
| VODI | 124 | 152 | 138 | 169 | 219 |  
| ODI | 84 | 147 | 153 | 170 | 285 |  
| CDI | 40 | 106 | 237 | 296 | 471 |  
| VCDI | 0 | 25 | 145 | 972 | 12668 |  | ...date precedes bulletin | 
 Date: 2011-04-13:
 | Best estimate | Forecast | 
 | 
|  | observations |  
|  | water | VODI | ODI | CDI | VCDI |  
| m o
 d
 e
 l
 | water | 19723 | 403 | 303 | 271 | 170 |  
| VODI | 80 | 165 | 116 | 237 | 244 |  
| ODI | 21 | 110 | 144 | 230 | 351 |  
| CDI | 29 | 90 | 160 | 415 | 513 |  
| VCDI | 1 | 31 | 213 | 817 | 12582 |  | 
|  | observations |  
|  | water | VODI | ODI | CDI | VCDI |  
| m o
 d
 e
 l
 | water | 19713 | 432 | 321 | 306 | 163 |  
| VODI | 72 | 134 | 155 | 253 | 199 |  
| ODI | 31 | 89 | 86 | 238 | 281 |  
| CDI | 36 | 106 | 148 | 332 | 429 |  
| VCDI | 2 | 38 | 226 | 841 | 12788 |  | 
 Date: 2011-04-15:
 | Best estimate | Forecast | 
 | 
|  | observations |  
|  | water | VODI | ODI | CDI | VCDI |  
| m o
 d
 e
 l
 | water | 20011 | 372 | 236 | 187 | 230 |  
| VODI | 169 | 153 | 123 | 145 | 248 |  
| ODI | 86 | 77 | 145 | 153 | 306 |  
| CDI | 60 | 86 | 205 | 333 | 494 |  
| VCDI | 5 | 28 | 99 | 752 | 12716 |  | 
|  | observations |  
|  | water | VODI | ODI | CDI | VCDI |  
| m o
 d
 e
 l
 | water | 20030 | 409 | 285 | 248 | 215 |  
| VODI | 136 | 96 | 108 | 137 | 201 |  
| ODI | 109 | 102 | 134 | 158 | 261 |  
| CDI | 47 | 71 | 166 | 251 | 408 |  
| VCDI | 9 | 38 | 115 | 776 | 12909 |  | 
 Date: 2011-04-19:
 | Best estimate | Forecast | 
 | 
|  | observations |  
|  | water | VODI | ODI | CDI | VCDI |  
| m o
 d
 e
 l
 | water | 20137 | 337 | 228 | 188 | 259 |  
| VODI | 231 | 165 | 122 | 107 | 232 |  
| ODI | 89 | 129 | 151 | 147 | 345 |  
| CDI | 81 | 92 | 195 | 231 | 655 |  
| VCDI | 12 | 62 | 187 | 645 | 12392 |  | 
|  | observations |  
|  | water | VODI | ODI | CDI | VCDI |  
| m o
 d
 e
 l
 | water | 20200 | 408 | 277 | 218 | 264 |  
| VODI | 152 | 120 | 130 | 132 | 224 |  
| ODI | 134 | 99 | 144 | 123 | 276 |  
| CDI | 42 | 70 | 118 | 209 | 570 |  
| VCDI | 22 | 88 | 214 | 636 | 12549 |  | 
 Date: 2011-04-21:
 | Best estimate | Forecast | 
 | ...observations not yet available | ...observations not yet available | 
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