Stratocumulus Frequency of Occurrence (%) October (1954 - 1997) , Ship Observations Only Global Average: 32.1 Zonal Averages 17 zones Lat.N Average 85 35.4 75 38.4 65 42.3 55 39.1 45 36.5 35 31.3 25 22.6 15 19.1 5 22.6 -5 23.7 -15 30.0 -25 35.7 -35 39.0 -45 38.9 -55 44.8 -65 48.9 -75 13.0 Grid Box Averages 386 filled boxes Box # Lat.N Lon.E Average 1 85 60 38.9 2 85 180 36.2 3 85 300 29.3 4 75 20 39.5 5 75 60 40.2 6 75 100 31.8 7 75 140 33.6 8 75 180 32.2 9 75 220 37.3 10 75 260 56.6 11 75 300 47.4 12 75 340 40.9 13 65 10 34.1 14 65 30 42.1 15 65 50 41.4 16 65 70 38.4 20 65 150 32.8 21 65 170 52.5 22 65 190 55.3 23 65 210 21.0 25 65 250 75.0 26 65 270 51.3 27 65 290 51.1 28 65 310 34.8 29 65 330 34.6 30 65 350 38.0 31 55 10 29.5 32 55 30 37.1 37 55 130 28.5 38 55 150 37.0 39 55 170 42.0 40 55 190 44.0 41 55 210 37.4 42 55 230 31.6 44 55 270 53.7 45 55 290 40.6 46 55 310 38.8 47 55 330 38.0 48 55 350 39.3 49 45 5 19.7 50 45 15 19.1 51 45 25 25.1 52 45 35 24.5 53 45 45 27.5 54 45 55 25.3 62 45 135 22.0 63 45 145 30.4 64 45 155 39.5 65 45 165 41.0 66 45 175 41.2 67 45 185 40.2 68 45 195 39.6 69 45 205 38.7 70 45 215 39.2 71 45 225 40.6 72 45 235 32.8 77 45 285 22.2 78 45 295 28.3 79 45 305 35.1 80 45 315 38.5 81 45 325 36.9 82 45 335 37.6 83 45 345 40.5 84 45 355 32.0 85 35 5 20.6 86 35 15 17.6 87 35 25 13.4 88 35 35 9.6 89 35 45 38.3 90 35 55 22.8 96 35 115 19.6 97 35 125 23.8 98 35 135 25.3 99 35 145 32.2 100 35 155 36.8 101 35 165 37.0 102 35 175 39.7 103 35 185 38.4 104 35 195 37.7 105 35 205 36.5 106 35 215 38.0 107 35 225 47.7 108 35 235 38.0 109 35 245 33.9 112 35 275 19.3 113 35 285 25.2 114 35 295 26.6 115 35 305 25.5 116 35 315 25.1 117 35 325 27.1 118 35 335 32.1 119 35 345 28.1 120 35 355 20.1 124 25 35 3.9 125 25 45 3.3 126 25 55 2.5 127 25 65 5.0 128 25 75 9.2 129 25 85 15.0 130 25 95 21.1 131 25 105 26.3 132 25 115 27.0 133 25 125 27.4 134 25 135 23.9 135 25 145 19.4 136 25 155 19.9 137 25 165 21.5 138 25 175 24.8 139 25 185 22.4 140 25 195 21.2 141 25 205 22.3 142 25 215 29.3 143 25 225 43.6 144 25 235 50.9 145 25 245 26.4 146 25 255 14.6 147 25 265 19.1 148 25 275 18.9 149 25 285 19.1 150 25 295 16.1 151 25 305 14.8 152 25 315 16.1 153 25 325 18.2 154 25 335 19.7 155 25 345 15.0 160 15 35 4.1 161 15 45 5.3 162 15 55 8.3 163 15 65 9.3 164 15 75 16.2 165 15 85 15.6 166 15 95 17.1 167 15 105 20.2 168 15 115 21.4 169 15 125 23.3 170 15 135 18.4 171 15 145 17.9 172 15 155 18.1 173 15 165 16.8 174 15 175 18.6 175 15 185 15.8 176 15 195 18.0 177 15 205 22.6 178 15 215 26.3 179 15 225 31.0 180 15 235 36.8 181 15 245 27.3 182 15 255 17.6 183 15 265 21.1 184 15 275 20.0 185 15 285 14.4 186 15 295 13.0 187 15 305 12.9 188 15 315 17.0 189 15 325 20.8 190 15 335 19.6 191 15 345 12.3 193 5 5 27.1 197 5 45 10.0 198 5 55 10.2 199 5 65 12.4 200 5 75 17.6 201 5 85 19.4 202 5 95 22.4 203 5 105 21.5 204 5 115 20.5 205 5 125 20.2 206 5 135 17.8 207 5 145 21.6 208 5 155 20.8 209 5 165 17.7 210 5 175 17.7 211 5 185 17.9 212 5 195 18.1 213 5 205 20.0 214 5 215 27.6 215 5 225 25.0 216 5 235 32.8 217 5 245 34.6 218 5 255 39.0 219 5 265 41.5 220 5 275 34.0 221 5 285 29.9 222 5 295 16.7 223 5 305 13.1 224 5 315 14.3 225 5 325 17.1 226 5 335 20.5 227 5 345 25.6 228 5 355 31.7 229 -5 5 52.4 230 -5 15 53.0 232 -5 35 13.7 233 -5 45 10.5 234 -5 55 15.1 235 -5 65 17.9 236 -5 75 21.2 237 -5 85 19.7 238 -5 95 20.6 239 -5 105 21.1 240 -5 115 12.1 241 -5 125 10.7 242 -5 135 12.5 243 -5 145 18.4 244 -5 155 21.7 245 -5 165 19.3 246 -5 175 15.1 247 -5 185 13.4 248 -5 195 11.3 249 -5 205 13.1 250 -5 215 11.7 251 -5 225 10.3 252 -5 235 14.4 253 -5 245 22.8 254 -5 255 41.1 255 -5 265 57.3 256 -5 275 55.2 257 -5 285 47.2 260 -5 315 13.1 261 -5 325 11.6 262 -5 335 19.9 263 -5 345 41.4 264 -5 355 54.5 265 -15 5 71.4 266 -15 15 45.8 268 -15 35 13.2 269 -15 45 10.3 270 -15 55 20.0 271 -15 65 21.2 272 -15 75 24.8 273 -15 85 26.2 274 -15 95 26.1 275 -15 105 23.9 276 -15 115 8.4 277 -15 125 7.9 278 -15 135 8.4 279 -15 145 16.8 280 -15 155 18.2 281 -15 165 22.4 282 -15 175 28.7 283 -15 185 23.1 284 -15 195 19.9 285 -15 205 23.5 286 -15 215 21.7 287 -15 225 14.4 288 -15 235 14.5 289 -15 245 25.3 290 -15 255 40.0 291 -15 265 51.2 292 -15 275 75.0 293 -15 285 63.9 297 -15 325 18.0 298 -15 335 29.6 299 -15 345 49.0 300 -15 355 69.6 301 -25 5 59.3 302 -25 15 38.1 304 -25 35 23.4 305 -25 45 25.1 306 -25 55 23.3 307 -25 65 31.9 308 -25 75 37.7 309 -25 85 40.7 310 -25 95 45.7 311 -25 105 42.2 312 -25 115 20.5 315 -25 145 11.6 316 -25 155 18.6 317 -25 165 28.6 318 -25 175 30.9 319 -25 185 32.4 320 -25 195 36.1 321 -25 205 32.9 322 -25 215 32.4 323 -25 225 32.8 324 -25 235 23.2 325 -25 245 24.6 326 -25 255 35.7 327 -25 265 48.7 328 -25 275 54.6 329 -25 285 60.0 332 -25 315 26.9 333 -25 325 27.0 334 -25 335 34.1 335 -25 345 35.3 336 -25 355 47.7 337 -35 5 49.7 338 -35 15 36.0 339 -35 25 30.0 340 -35 35 33.2 341 -35 45 37.8 342 -35 55 36.2 343 -35 65 43.3 344 -35 75 46.7 345 -35 85 45.2 346 -35 95 43.8 347 -35 105 48.2 348 -35 115 34.4 349 -35 125 36.2 350 -35 135 37.3 351 -35 145 30.0 352 -35 155 31.1 353 -35 165 37.2 354 -35 175 34.5 355 -35 185 37.5 356 -35 195 40.0 357 -35 205 37.8 358 -35 215 43.3 359 -35 225 34.0 360 -35 235 30.5 361 -35 245 39.5 362 -35 255 41.2 363 -35 265 49.4 364 -35 275 45.4 365 -35 285 47.5 366 -35 295 30.6 367 -35 305 26.7 368 -35 315 28.3 369 -35 325 34.2 370 -35 335 38.0 371 -35 345 39.2 372 -35 355 43.4 373 -45 5 52.2 375 -45 25 40.9 376 -45 35 33.9 377 -45 45 42.0 378 -45 55 44.6 379 -45 65 31.7 380 -45 75 33.2 381 -45 85 29.0 382 -45 95 30.3 383 -45 105 37.3 384 -45 115 34.0 385 -45 125 33.9 386 -45 135 46.1 387 -45 145 34.5 388 -45 155 40.2 389 -45 165 41.3 390 -45 175 38.8 391 -45 185 44.4 392 -45 195 44.7 393 -45 205 46.8 394 -45 215 37.0 395 -45 225 39.4 396 -45 235 41.3 397 -45 245 28.1 398 -45 255 34.2 399 -45 265 44.3 400 -45 275 47.4 401 -45 285 41.9 402 -45 295 32.5 403 -45 305 28.0 404 -45 315 37.0 405 -45 325 51.6 406 -45 335 48.7 407 -45 345 33.8 408 -45 355 35.8 409 -55 10 41.6 410 -55 30 48.4 411 -55 50 42.2 412 -55 70 46.8 413 -55 90 45.4 414 -55 110 56.9 415 -55 130 48.5 416 -55 150 52.0 417 -55 170 60.5 418 -55 190 37.4 419 -55 210 37.0 420 -55 230 40.3 421 -55 250 40.9 422 -55 270 38.1 423 -55 290 36.7 424 -55 310 46.2 425 -55 330 35.3 426 -55 350 51.0 429 -65 50 47.3 430 -65 70 65.7 431 -65 90 56.5 432 -65 110 37.3 433 -65 130 21.6 434 -65 150 56.4 435 -65 170 69.3 441 -65 290 54.1 442 -65 310 50.4 444 -65 350 23.6 453 -75 340 13.0