Stratocumulus Frequency of Occurrence (%) August (1954 - 1997) , Ship Observations Only Global Average: 31.3 Zonal Averages 16 zones Lat.N Average 85 27.7 75 34.9 65 37.8 55 36.6 45 33.8 35 26.2 25 22.3 15 22.5 5 23.9 -5 23.8 -15 30.9 -25 35.5 -35 37.1 -45 38.2 -55 39.9 -65 45.1 Grid Box Averages 368 filled boxes Box # Lat.N Lon.E Average 1 85 60 25.1 2 85 180 31.3 3 85 300 25.9 4 75 20 40.4 5 75 60 41.7 6 75 100 34.1 7 75 140 29.0 8 75 180 28.4 9 75 220 33.6 10 75 260 46.0 11 75 300 34.2 12 75 340 30.5 13 65 10 37.9 14 65 30 41.2 15 65 50 43.0 16 65 70 46.0 20 65 150 38.9 21 65 170 44.1 22 65 190 39.8 23 65 210 36.8 24 65 230 36.3 25 65 250 44.0 26 65 270 40.9 27 65 290 35.6 28 65 310 29.3 29 65 330 35.0 30 65 350 39.7 31 55 10 26.8 32 55 30 26.5 37 55 130 30.4 38 55 150 32.9 39 55 170 34.7 40 55 190 34.7 41 55 210 39.5 42 55 230 37.4 44 55 270 35.0 45 55 290 30.1 46 55 310 34.8 47 55 330 42.8 48 55 350 42.9 49 45 5 12.3 50 45 15 10.9 51 45 25 11.2 52 45 35 12.8 53 45 45 13.3 54 45 55 10.8 62 45 135 30.0 63 45 145 31.2 64 45 155 32.5 65 45 165 32.9 66 45 175 34.1 67 45 185 34.7 68 45 195 36.7 69 45 205 38.8 70 45 215 44.4 71 45 225 49.1 72 45 235 37.4 77 45 285 18.5 78 45 295 18.6 79 45 305 25.0 80 45 315 31.0 81 45 325 34.0 82 45 335 38.4 83 45 345 40.9 84 45 355 28.9 85 35 5 12.3 86 35 15 7.4 87 35 25 3.6 88 35 35 9.3 90 35 55 12.5 96 35 115 21.6 97 35 125 21.7 98 35 135 19.5 99 35 145 27.0 100 35 155 30.4 101 35 165 28.1 102 35 175 28.5 103 35 185 27.6 104 35 195 28.2 105 35 205 34.7 106 35 215 40.5 107 35 225 52.8 108 35 235 42.8 109 35 245 42.0 112 35 275 13.4 113 35 285 18.9 114 35 295 19.0 115 35 305 15.6 116 35 315 13.5 117 35 325 18.5 118 35 335 28.3 119 35 345 33.4 120 35 355 14.6 124 25 35 3.1 125 25 45 0.9 126 25 55 8.5 127 25 65 35.2 128 25 75 37.8 129 25 85 29.4 130 25 95 23.5 131 25 105 25.1 132 25 115 21.2 133 25 125 19.2 134 25 135 15.9 135 25 145 17.9 136 25 155 14.7 137 25 165 14.9 138 25 175 13.9 139 25 185 13.2 140 25 195 15.7 141 25 205 23.6 142 25 215 37.2 143 25 225 54.0 144 25 235 59.4 145 25 245 32.9 146 25 255 18.8 147 25 265 14.3 148 25 275 13.0 149 25 285 14.1 150 25 295 11.5 151 25 305 10.3 152 25 315 14.1 153 25 325 21.6 154 25 335 33.7 155 25 345 23.4 160 15 35 9.0 161 15 45 11.5 162 15 55 14.6 163 15 65 28.9 164 15 75 26.8 165 15 85 23.5 166 15 95 22.4 167 15 105 20.3 168 15 115 24.4 169 15 125 24.9 170 15 135 22.5 171 15 145 21.9 172 15 155 18.5 173 15 165 13.0 174 15 175 15.2 175 15 185 15.5 176 15 195 16.0 177 15 205 25.3 178 15 215 30.1 179 15 225 36.8 180 15 235 37.4 181 15 245 23.9 182 15 255 21.7 183 15 265 23.1 184 15 275 19.1 185 15 285 17.2 186 15 295 12.9 187 15 305 13.8 188 15 315 21.0 189 15 325 30.1 190 15 335 31.2 191 15 345 22.8 193 5 5 33.0 197 5 45 16.2 198 5 55 14.1 199 5 65 14.9 200 5 75 18.5 201 5 85 20.8 202 5 95 23.3 203 5 105 23.0 204 5 115 22.4 205 5 125 23.4 206 5 135 21.2 207 5 145 22.6 208 5 155 22.3 209 5 165 19.7 210 5 175 16.3 211 5 185 18.4 212 5 195 17.7 213 5 205 23.2 214 5 215 26.9 215 5 225 27.9 216 5 235 25.6 217 5 245 32.6 218 5 255 39.3 219 5 265 40.6 220 5 275 34.3 221 5 285 33.1 223 5 305 16.6 224 5 315 18.2 225 5 325 17.0 226 5 335 22.1 227 5 345 31.4 228 5 355 37.1 229 -5 5 47.0 230 -5 15 50.8 232 -5 35 17.8 233 -5 45 15.9 234 -5 55 19.7 235 -5 65 20.9 236 -5 75 20.0 237 -5 85 21.5 238 -5 95 21.7 239 -5 105 19.3 240 -5 115 13.4 241 -5 125 14.1 242 -5 135 19.4 243 -5 145 20.6 244 -5 155 25.1 245 -5 165 20.0 246 -5 175 14.1 247 -5 185 13.7 248 -5 195 16.1 249 -5 205 14.9 250 -5 215 13.7 251 -5 225 11.3 252 -5 235 14.7 253 -5 245 22.1 254 -5 255 39.9 255 -5 265 55.6 256 -5 275 58.8 257 -5 285 58.2 260 -5 315 11.7 261 -5 325 14.2 262 -5 335 15.4 263 -5 345 26.8 264 -5 355 44.5 265 -15 5 72.4 266 -15 15 43.4 268 -15 35 10.4 269 -15 45 11.4 270 -15 55 18.8 271 -15 65 22.1 272 -15 75 26.6 273 -15 85 30.7 274 -15 95 28.1 275 -15 105 24.9 276 -15 115 11.8 277 -15 125 4.5 278 -15 135 13.8 279 -15 145 20.9 280 -15 155 24.8 281 -15 165 26.5 282 -15 175 30.5 283 -15 185 25.7 284 -15 195 26.0 285 -15 205 24.4 286 -15 215 19.5 287 -15 225 17.8 288 -15 235 20.3 289 -15 245 26.3 290 -15 255 41.2 291 -15 265 52.3 292 -15 275 70.1 293 -15 285 62.6 297 -15 325 16.9 298 -15 335 27.3 299 -15 345 38.0 300 -15 355 68.2 301 -25 5 56.4 302 -25 15 32.6 304 -25 35 15.5 305 -25 45 21.8 306 -25 55 25.4 307 -25 65 34.6 308 -25 75 34.7 309 -25 85 40.6 310 -25 95 39.8 311 -25 105 35.8 312 -25 115 20.7 315 -25 145 17.3 316 -25 155 15.8 317 -25 165 26.4 318 -25 175 30.9 319 -25 185 31.6 320 -25 195 31.1 321 -25 205 36.9 322 -25 215 37.7 323 -25 225 35.6 324 -25 235 30.8 325 -25 245 26.8 326 -25 255 28.1 327 -25 265 59.9 328 -25 275 58.2 329 -25 285 55.8 332 -25 315 23.9 333 -25 325 25.3 334 -25 335 32.9 335 -25 345 40.1 336 -25 355 49.5 337 -35 5 46.2 338 -35 15 30.7 339 -35 25 21.2 340 -35 35 24.5 341 -35 45 37.9 342 -35 55 39.1 343 -35 65 44.4 344 -35 75 46.6 345 -35 85 45.8 346 -35 95 45.1 347 -35 105 44.4 348 -35 115 32.6 349 -35 125 31.1 350 -35 135 34.3 351 -35 145 33.1 352 -35 155 23.9 353 -35 165 29.5 354 -35 175 30.8 355 -35 185 31.7 356 -35 195 30.9 357 -35 205 33.1 358 -35 215 33.0 359 -35 225 36.0 360 -35 235 36.5 361 -35 245 50.4 362 -35 255 43.6 363 -35 265 46.8 364 -35 275 45.9 365 -35 285 43.1 367 -35 305 25.0 368 -35 315 31.6 369 -35 325 39.7 370 -35 335 37.0 371 -35 345 31.4 372 -35 355 42.2 373 -45 5 28.4 374 -45 15 34.6 375 -45 25 45.4 376 -45 35 48.0 377 -45 45 35.7 378 -45 55 31.8 379 -45 65 26.2 380 -45 75 33.8 381 -45 85 36.7 383 -45 105 44.4 384 -45 115 40.0 385 -45 125 42.4 386 -45 135 38.6 387 -45 145 33.5 388 -45 155 31.7 389 -45 165 31.4 390 -45 175 39.8 391 -45 185 42.6 392 -45 195 47.2 393 -45 205 42.2 394 -45 215 29.3 395 -45 225 39.4 396 -45 235 40.8 397 -45 245 42.4 398 -45 255 32.3 399 -45 265 35.9 400 -45 275 50.8 401 -45 285 43.5 402 -45 295 34.7 403 -45 305 36.4 404 -45 315 39.3 405 -45 325 46.5 406 -45 335 27.7 407 -45 345 38.0 408 -45 355 45.5 409 -55 10 31.2 411 -55 50 35.0 412 -55 70 35.0 417 -55 170 56.1 419 -55 210 39.5 420 -55 230 39.4 421 -55 250 32.2 422 -55 270 41.8 423 -55 290 40.5 424 -55 310 49.6 425 -55 330 39.1 427 -65 10 38.5 429 -65 50 54.6