Stratocumulus Frequency of Occurrence (%) November (1954 - 1997) Day, Ship Observations Only Global Average: 30.7 Zonal Averages 17 zones Lat.N Average 85 23.1 75 28.5 65 40.0 55 38.2 45 37.8 35 34.5 25 25.8 15 19.5 5 21.3 -5 21.3 -15 27.3 -25 30.9 -35 37.5 -45 39.2 -55 40.8 -65 41.4 -75 41.9 Grid Box Averages 379 filled boxes Box # Lat.N Lon.E Average 1 85 60 24.4 2 85 180 21.9 4 75 20 40.6 5 75 60 39.4 6 75 100 20.5 7 75 140 14.6 8 75 180 25.5 9 75 220 12.1 10 75 260 47.3 11 75 300 35.3 12 75 340 33.9 13 65 10 32.4 14 65 30 43.5 15 65 50 40.3 20 65 150 38.8 21 65 170 45.8 22 65 190 52.0 23 65 210 35.2 27 65 290 52.1 28 65 310 39.0 29 65 330 32.4 30 65 350 35.4 31 55 10 31.4 32 55 30 42.6 37 55 130 31.2 38 55 150 37.2 39 55 170 40.2 40 55 190 41.3 41 55 210 38.3 42 55 230 33.6 45 55 290 40.8 46 55 310 39.2 47 55 330 36.4 48 55 350 39.0 49 45 5 25.0 50 45 15 34.3 51 45 25 35.3 52 45 35 33.3 53 45 45 33.2 54 45 55 32.2 61 45 125 24.4 62 45 135 26.3 63 45 145 36.1 64 45 155 42.9 65 45 165 42.6 66 45 175 39.3 67 45 185 37.6 68 45 195 37.8 69 45 205 37.4 70 45 215 37.5 71 45 225 39.3 72 45 235 33.9 77 45 285 31.9 78 45 295 36.9 79 45 305 38.0 80 45 315 39.0 81 45 325 37.6 82 45 335 39.2 83 45 345 41.0 84 45 355 32.3 85 35 5 23.0 86 35 15 23.6 87 35 25 21.8 88 35 35 15.7 90 35 55 24.1 96 35 115 21.2 97 35 125 27.9 98 35 135 28.3 99 35 145 35.8 100 35 155 38.1 101 35 165 39.1 102 35 175 40.4 103 35 185 39.9 104 35 195 40.6 105 35 205 40.8 106 35 215 42.0 107 35 225 47.1 108 35 235 35.5 109 35 245 25.9 112 35 275 21.4 113 35 285 30.7 114 35 295 32.5 115 35 305 30.2 116 35 315 29.6 117 35 325 31.5 118 35 335 35.3 119 35 345 32.1 120 35 355 24.6 124 25 35 6.6 125 25 45 13.0 126 25 55 5.8 127 25 65 6.6 128 25 75 8.3 129 25 85 14.2 131 25 105 26.9 132 25 115 34.9 133 25 125 32.8 134 25 135 30.5 135 25 145 24.5 136 25 155 24.2 137 25 165 25.8 138 25 175 27.6 139 25 185 26.0 140 25 195 25.0 141 25 205 26.4 142 25 215 33.0 143 25 225 43.9 144 25 235 47.4 145 25 245 25.6 146 25 255 17.5 147 25 265 24.8 148 25 275 22.8 149 25 285 22.7 150 25 295 19.2 151 25 305 18.4 152 25 315 18.5 153 25 325 20.9 154 25 335 21.7 155 25 345 16.8 160 15 35 8.6 161 15 45 5.5 162 15 55 9.3 163 15 65 10.3 164 15 75 14.7 165 15 85 16.7 166 15 95 18.4 167 15 105 24.8 168 15 115 24.3 169 15 125 24.4 170 15 135 19.3 171 15 145 15.6 172 15 155 15.5 173 15 165 16.9 174 15 175 19.4 175 15 185 19.9 176 15 195 19.0 177 15 205 23.2 178 15 215 25.6 179 15 225 35.1 180 15 235 38.6 181 15 245 27.8 182 15 255 14.2 183 15 265 14.6 184 15 275 19.0 185 15 285 15.3 186 15 295 13.2 187 15 305 14.6 188 15 315 16.6 189 15 325 21.1 190 15 335 19.0 191 15 345 10.5 193 5 5 21.3 197 5 45 10.3 198 5 55 11.1 199 5 65 12.3 200 5 75 18.5 201 5 85 18.8 202 5 95 20.8 203 5 105 22.9 204 5 115 22.0 205 5 125 14.9 206 5 135 15.6 207 5 145 18.8 208 5 155 16.8 209 5 165 17.9 210 5 175 19.5 211 5 185 19.8 212 5 195 17.8 213 5 205 20.6 214 5 215 26.4 215 5 225 24.8 216 5 235 32.4 217 5 245 32.1 218 5 255 32.6 219 5 265 34.9 220 5 275 31.0 221 5 285 27.2 223 5 305 15.9 224 5 315 18.1 225 5 325 17.3 226 5 335 20.9 227 5 345 20.4 228 5 355 21.6 229 -5 5 41.4 230 -5 15 50.2 232 -5 35 7.5 233 -5 45 8.6 234 -5 55 12.3 235 -5 65 17.3 236 -5 75 16.8 237 -5 85 17.6 238 -5 95 21.8 239 -5 105 22.6 240 -5 115 15.0 241 -5 125 12.5 242 -5 135 12.2 243 -5 145 18.7 244 -5 155 19.0 245 -5 165 17.5 246 -5 175 17.6 247 -5 185 18.3 248 -5 195 13.7 249 -5 205 12.5 250 -5 215 11.6 251 -5 225 10.6 252 -5 235 9.6 253 -5 245 21.1 254 -5 255 32.1 255 -5 265 47.2 256 -5 275 44.1 257 -5 285 40.8 260 -5 315 13.4 261 -5 325 11.7 262 -5 335 18.7 263 -5 345 36.5 264 -5 355 45.3 265 -15 5 65.2 266 -15 15 45.3 268 -15 35 14.4 269 -15 45 10.3 270 -15 55 14.8 271 -15 65 17.5 272 -15 75 18.3 273 -15 85 23.5 274 -15 95 22.8 275 -15 105 29.7 276 -15 115 10.8 277 -15 125 10.9 278 -15 135 10.3 279 -15 145 13.9 280 -15 155 14.7 281 -15 165 18.4 282 -15 175 22.6 283 -15 185 20.7 284 -15 195 21.0 285 -15 205 19.9 286 -15 215 17.6 287 -15 225 12.6 288 -15 235 14.2 289 -15 245 22.3 290 -15 255 35.3 291 -15 265 47.0 292 -15 275 66.4 293 -15 285 61.7 297 -15 325 18.9 298 -15 335 26.9 299 -15 345 46.0 300 -15 355 66.4 301 -25 5 52.1 302 -25 15 38.5 304 -25 35 23.1 305 -25 45 21.9 306 -25 55 19.2 307 -25 65 21.7 308 -25 75 25.1 309 -25 85 27.8 310 -25 95 34.7 311 -25 105 43.1 312 -25 115 22.6 315 -25 145 15.3 316 -25 155 17.7 317 -25 165 22.4 318 -25 175 23.9 319 -25 185 28.6 320 -25 195 27.5 321 -25 205 27.7 322 -25 215 33.8 323 -25 225 29.6 324 -25 235 17.7 325 -25 245 16.8 326 -25 255 19.2 327 -25 265 38.3 328 -25 275 60.4 329 -25 285 60.2 332 -25 315 25.8 333 -25 325 27.3 334 -25 335 30.0 335 -25 345 33.4 336 -25 355 49.0 337 -35 5 43.2 338 -35 15 31.4 339 -35 25 29.0 340 -35 35 30.2 341 -35 45 33.8 342 -35 55 33.0 343 -35 65 39.8 344 -35 75 38.4 345 -35 85 39.9 346 -35 95 42.7 347 -35 105 49.7 348 -35 115 35.2 349 -35 125 41.1 350 -35 135 40.1 351 -35 145 30.6 352 -35 155 28.1 353 -35 165 33.1 354 -35 175 29.3 355 -35 185 30.3 356 -35 195 37.6 357 -35 205 36.9 358 -35 215 38.4 359 -35 225 34.5 360 -35 235 40.1 361 -35 245 48.9 362 -35 255 37.4 363 -35 265 48.7 364 -35 275 52.8 365 -35 285 51.3 366 -35 295 18.3 367 -35 305 25.3 368 -35 315 28.7 369 -35 325 33.0 370 -35 335 29.5 371 -35 345 36.8 372 -35 355 40.0 373 -45 5 50.5 374 -45 15 45.9 375 -45 25 47.9 376 -45 35 33.6 377 -45 45 38.6 378 -45 55 38.9 379 -45 65 41.9 380 -45 75 38.7 381 -45 85 43.2 382 -45 95 30.9 383 -45 105 35.4 384 -45 115 38.8 385 -45 125 37.7 386 -45 135 43.9 387 -45 145 37.3 388 -45 155 39.1 389 -45 165 39.5 390 -45 175 36.9 391 -45 185 39.0 392 -45 195 41.2 393 -45 205 40.1 394 -45 215 37.7 395 -45 225 35.3 396 -45 235 39.7 397 -45 245 39.6 400 -45 275 46.6 401 -45 285 40.6 402 -45 295 28.9 403 -45 305 29.0 404 -45 315 36.6 405 -45 325 40.9 406 -45 335 38.4 407 -45 345 39.1 408 -45 355 36.4 409 -55 10 38.1 410 -55 30 38.1 411 -55 50 33.1 412 -55 70 41.4 413 -55 90 46.4 414 -55 110 34.7 415 -55 130 40.0 416 -55 150 47.1 417 -55 170 55.4 418 -55 190 38.2 419 -55 210 42.2 420 -55 230 47.1 421 -55 250 30.3 422 -55 270 34.4 423 -55 290 39.6 424 -55 310 45.7 425 -55 330 38.0 426 -55 350 45.3 429 -65 50 36.3 430 -65 70 49.8 431 -65 90 45.1 432 -65 110 43.1 433 -65 130 29.1 434 -65 150 38.1 435 -65 170 47.9 436 -65 190 30.4 441 -65 290 44.4 442 -65 310 47.7 449 -75 180 44.8 453 -75 340 37.3