Stratocumulus Amount-When-Present (%) September, October, November (1954 - 1997) , Ship Observations Only Global Average: 72.7 Zonal Averages 17 zones Lat.N Average 85 81.1 75 81.3 65 77.9 55 77.3 45 76.8 35 70.9 25 66.1 15 64.2 5 69.1 -5 70.0 -15 74.4 -25 72.3 -35 74.6 -45 76.4 -55 80.4 -65 76.9 -75 59.2 Grid Box Averages 391 filled boxes Box # Lat.N Lon.E Average 1 85 60 79.2 2 85 180 87.6 3 85 300 74.1 4 75 20 82.1 5 75 60 84.5 6 75 100 81.5 7 75 140 87.5 8 75 180 85.5 9 75 220 79.2 10 75 260 68.4 11 75 300 69.8 12 75 340 82.2 13 65 10 75.0 14 65 30 79.3 15 65 50 81.2 16 65 70 85.8 20 65 150 81.2 21 65 170 81.6 22 65 190 84.9 23 65 210 70.3 24 65 230 76.4 25 65 250 76.4 26 65 270 75.6 27 65 290 75.3 28 65 310 74.6 29 65 330 73.5 30 65 350 78.7 31 55 10 72.3 32 55 30 75.3 37 55 130 69.4 38 55 150 77.1 39 55 170 78.7 40 55 190 79.8 41 55 210 77.5 42 55 230 77.4 44 55 270 78.2 45 55 290 71.2 46 55 310 79.5 47 55 330 77.8 48 55 350 72.0 49 45 5 59.4 50 45 15 57.0 51 45 25 67.9 52 45 35 72.5 53 45 45 68.5 54 45 55 67.7 61 45 125 74.6 62 45 135 72.8 63 45 145 76.4 64 45 155 79.1 65 45 165 79.6 66 45 175 79.2 67 45 185 79.0 68 45 195 78.2 69 45 205 77.6 70 45 215 77.9 71 45 225 77.6 72 45 235 73.9 77 45 285 72.0 78 45 295 74.4 79 45 305 76.4 80 45 315 77.2 81 45 325 76.4 82 45 335 76.9 83 45 345 74.1 84 45 355 71.9 85 35 5 58.5 86 35 15 58.4 87 35 25 58.3 88 35 35 51.6 89 35 45 70.2 90 35 55 63.4 96 35 115 60.9 97 35 125 69.5 98 35 135 68.8 99 35 145 74.6 100 35 155 74.7 101 35 165 72.1 102 35 175 72.4 103 35 185 72.8 104 35 195 73.4 105 35 205 73.1 106 35 215 73.2 107 35 225 74.4 108 35 235 75.6 109 35 245 72.4 112 35 275 63.3 113 35 285 66.6 114 35 295 69.9 115 35 305 68.8 116 35 315 66.6 117 35 325 67.7 118 35 335 68.3 119 35 345 68.5 120 35 355 59.0 124 25 35 49.3 125 25 45 48.1 126 25 55 51.5 127 25 65 56.3 128 25 75 51.3 129 25 85 53.2 130 25 95 67.7 131 25 105 76.1 132 25 115 71.9 133 25 125 68.9 134 25 135 66.1 135 25 145 64.5 136 25 155 62.1 137 25 165 63.5 138 25 175 62.6 139 25 185 62.6 140 25 195 62.4 141 25 205 61.8 142 25 215 66.9 143 25 225 75.2 144 25 235 80.0 145 25 245 68.5 146 25 255 55.5 147 25 265 61.5 148 25 275 59.5 149 25 285 60.3 150 25 295 61.1 151 25 305 61.5 152 25 315 60.3 153 25 325 60.5 154 25 335 63.8 155 25 345 63.9 160 15 35 50.6 161 15 45 51.0 162 15 55 60.9 163 15 65 58.3 164 15 75 58.9 165 15 85 58.1 166 15 95 56.4 167 15 105 67.2 168 15 115 65.4 169 15 125 65.3 170 15 135 65.1 171 15 145 66.5 172 15 155 64.5 173 15 165 62.2 174 15 175 60.5 175 15 185 61.8 176 15 195 63.2 177 15 205 63.0 178 15 215 69.3 179 15 225 71.8 180 15 235 74.5 181 15 245 67.6 182 15 255 60.5 183 15 265 58.8 184 15 275 60.6 185 15 285 58.2 186 15 295 56.3 187 15 305 59.1 188 15 315 60.7 189 15 325 62.9 190 15 335 65.2 191 15 345 63.7 193 5 5 69.6 197 5 45 55.7 198 5 55 57.7 199 5 65 60.5 200 5 75 61.8 201 5 85 62.6 202 5 95 66.7 203 5 105 64.8 204 5 115 65.1 205 5 125 64.9 206 5 135 65.3 207 5 145 70.8 208 5 155 70.0 209 5 165 63.4 210 5 175 65.5 211 5 185 61.4 212 5 195 63.5 213 5 205 66.7 214 5 215 71.6 215 5 225 71.1 216 5 235 74.6 217 5 245 76.1 218 5 255 78.4 219 5 265 77.8 220 5 275 74.6 221 5 285 70.9 223 5 305 59.0 224 5 315 60.0 225 5 325 64.5 226 5 335 68.9 227 5 345 70.9 228 5 355 71.8 229 -5 5 82.0 230 -5 15 76.4 232 -5 35 54.0 233 -5 45 57.5 234 -5 55 61.5 235 -5 65 63.6 236 -5 75 66.0 237 -5 85 65.6 238 -5 95 67.7 239 -5 105 65.0 240 -5 115 56.3 241 -5 125 52.4 242 -5 135 59.4 243 -5 145 63.7 244 -5 155 68.4 245 -5 165 62.9 246 -5 175 60.8 247 -5 185 57.3 248 -5 195 53.9 249 -5 205 56.9 250 -5 215 53.0 251 -5 225 54.3 252 -5 235 56.8 253 -5 245 65.3 254 -5 255 73.3 255 -5 265 79.2 256 -5 275 84.7 257 -5 285 86.1 260 -5 315 48.2 261 -5 325 54.3 262 -5 335 62.4 263 -5 345 75.1 264 -5 355 83.8 265 -15 5 90.3 266 -15 15 79.1 268 -15 35 58.6 269 -15 45 55.3 270 -15 55 62.8 271 -15 65 64.3 272 -15 75 67.9 273 -15 85 67.0 274 -15 95 65.7 275 -15 105 64.0 276 -15 115 53.0 277 -15 125 41.9 278 -15 135 50.7 279 -15 145 57.6 280 -15 155 64.7 281 -15 165 66.2 282 -15 175 63.9 283 -15 185 65.7 284 -15 195 66.5 285 -15 205 67.3 286 -15 215 62.5 287 -15 225 63.0 288 -15 235 61.7 289 -15 245 65.8 290 -15 255 73.6 291 -15 265 80.0 292 -15 275 89.3 293 -15 285 88.7 297 -15 325 60.9 298 -15 335 67.8 299 -15 345 79.0 300 -15 355 90.3 301 -25 5 82.8 302 -25 15 76.2 304 -25 35 70.1 305 -25 45 67.9 306 -25 55 65.7 307 -25 65 69.8 308 -25 75 70.6 309 -25 85 72.3 310 -25 95 74.0 311 -25 105 73.9 312 -25 115 61.6 315 -25 145 56.2 316 -25 155 61.5 317 -25 165 62.6 318 -25 175 65.0 319 -25 185 66.1 320 -25 195 67.2 321 -25 205 69.7 322 -25 215 69.3 323 -25 225 65.4 324 -25 235 66.8 325 -25 245 68.3 326 -25 255 66.8 327 -25 265 76.9 328 -25 275 82.3 329 -25 285 84.1 332 -25 315 64.7 333 -25 325 69.0 334 -25 335 70.0 335 -25 345 71.7 336 -25 355 78.4 337 -35 5 77.3 338 -35 15 68.4 339 -35 25 69.9 340 -35 35 75.2 341 -35 45 74.3 342 -35 55 74.3 343 -35 65 75.0 344 -35 75 76.1 345 -35 85 77.8 346 -35 95 76.5 347 -35 105 78.5 348 -35 115 70.9 349 -35 125 73.3 350 -35 135 73.7 351 -35 145 68.3 352 -35 155 66.4 353 -35 165 70.6 354 -35 175 65.7 355 -35 185 69.2 356 -35 195 74.1 357 -35 205 75.1 358 -35 215 75.2 359 -35 225 76.2 360 -35 235 78.3 361 -35 245 79.0 362 -35 255 78.5 363 -35 265 78.2 364 -35 275 81.5 365 -35 285 77.5 366 -35 295 53.7 367 -35 305 65.8 368 -35 315 70.0 369 -35 325 71.5 370 -35 335 74.2 371 -35 345 70.8 372 -35 355 74.5 373 -45 5 64.9 374 -45 15 72.7 375 -45 25 68.1 376 -45 35 73.1 377 -45 45 76.0 378 -45 55 82.8 379 -45 65 76.9 380 -45 75 75.3 381 -45 85 80.5 382 -45 95 76.8 383 -45 105 74.6 384 -45 115 76.1 385 -45 125 75.2 386 -45 135 74.2 387 -45 145 64.6 388 -45 155 72.5 389 -45 165 75.3 390 -45 175 68.9 391 -45 185 75.8 392 -45 195 76.9 393 -45 205 80.0 394 -45 215 79.0 395 -45 225 81.0 396 -45 235 83.9 397 -45 245 84.5 398 -45 255 82.5 399 -45 265 77.2 400 -45 275 81.7 401 -45 285 76.8 402 -45 295 64.3 403 -45 305 70.8 404 -45 315 76.6 405 -45 325 77.3 406 -45 335 81.9 407 -45 345 78.8 408 -45 355 82.3 409 -55 10 79.7 410 -55 30 79.0 411 -55 50 83.0 412 -55 70 81.0 413 -55 90 82.8 414 -55 110 77.5 415 -55 130 73.3 416 -55 150 82.2 417 -55 170 82.5 418 -55 190 76.2 419 -55 210 82.6 420 -55 230 88.0 421 -55 250 85.6 422 -55 270 80.2 423 -55 290 72.9 424 -55 310 74.4 425 -55 330 76.5 426 -55 350 85.3 427 -65 10 81.1 429 -65 50 64.9 430 -65 70 67.8 431 -65 90 71.5 432 -65 110 76.2 433 -65 130 75.1 434 -65 150 83.9 435 -65 170 85.5 436 -65 190 78.5 441 -65 290 74.7 442 -65 310 83.2 444 -65 350 71.3 449 -75 180 54.7 453 -75 340 71.1