Stratus Amount-When-Present (%) September, October, November (1954 - 1997) , Ship Observations Only Global Average: 84.0 Zonal Averages 17 zones Lat.N Average 85 86.6 75 88.3 65 86.6 55 89.1 45 88.1 35 83.1 25 78.9 15 78.2 5 81.4 -5 80.5 -15 82.0 -25 82.8 -35 85.6 -45 88.3 -55 90.7 -65 90.2 -75 85.9 Grid Box Averages 380 filled boxes Box # Lat.N Lon.E Average 1 85 60 86.5 2 85 180 91.7 3 85 300 81.7 4 75 20 89.5 5 75 60 92.4 6 75 100 91.3 7 75 140 90.2 8 75 180 90.5 9 75 220 86.6 10 75 260 76.3 11 75 300 79.4 12 75 340 90.3 13 65 10 85.2 14 65 30 89.3 15 65 50 89.4 16 65 70 91.0 20 65 150 93.5 21 65 170 93.8 22 65 190 93.5 23 65 210 92.5 25 65 250 82.2 26 65 270 84.4 27 65 290 86.4 28 65 310 86.6 29 65 330 82.2 30 65 350 86.3 31 55 10 83.2 32 55 30 86.7 37 55 130 80.5 38 55 150 89.2 39 55 170 91.7 40 55 190 90.8 41 55 210 90.2 42 55 230 90.7 44 55 270 85.1 45 55 290 86.3 46 55 310 89.0 47 55 330 88.6 48 55 350 86.5 49 45 5 74.3 50 45 15 71.5 51 45 25 79.0 52 45 35 81.4 53 45 45 67.4 54 45 55 70.6 62 45 135 83.8 63 45 145 88.0 64 45 155 89.9 65 45 165 90.5 66 45 175 90.5 67 45 185 89.8 68 45 195 89.6 69 45 205 89.6 70 45 215 89.6 71 45 225 89.4 72 45 235 87.2 77 45 285 83.4 78 45 295 85.6 79 45 305 86.5 80 45 315 87.0 81 45 325 86.3 82 45 335 86.4 83 45 345 85.5 84 45 355 83.0 85 35 5 70.8 86 35 15 71.9 87 35 25 70.3 88 35 35 66.1 96 35 115 70.9 97 35 125 78.4 98 35 135 81.3 99 35 145 86.7 100 35 155 86.8 101 35 165 85.6 102 35 175 85.5 103 35 185 85.7 104 35 195 85.9 105 35 205 85.4 106 35 215 84.7 107 35 225 85.3 108 35 235 85.3 109 35 245 79.4 112 35 275 76.6 113 35 285 79.9 114 35 295 81.8 115 35 305 80.8 116 35 315 79.8 117 35 325 79.8 118 35 335 80.0 119 35 345 77.6 120 35 355 71.4 124 25 35 52.8 125 25 45 59.1 126 25 55 63.5 127 25 65 67.2 129 25 85 74.5 131 25 105 81.2 132 25 115 83.1 133 25 125 83.4 134 25 135 80.6 135 25 145 79.9 136 25 155 79.7 137 25 165 78.1 138 25 175 79.2 139 25 185 78.6 140 25 195 79.8 141 25 205 78.6 142 25 215 80.9 143 25 225 84.1 144 25 235 87.0 145 25 245 75.8 146 25 255 71.8 147 25 265 77.1 148 25 275 74.9 149 25 285 74.8 150 25 295 75.3 151 25 305 75.4 152 25 315 75.0 153 25 325 75.2 154 25 335 69.0 155 25 345 70.0 160 15 35 60.2 161 15 45 55.1 162 15 55 72.0 163 15 65 71.8 164 15 75 75.0 165 15 85 71.2 166 15 95 74.3 167 15 105 81.9 168 15 115 80.4 169 15 125 79.9 170 15 135 81.7 171 15 145 81.5 172 15 155 80.5 173 15 165 81.3 174 15 175 75.6 175 15 185 77.1 176 15 195 76.6 177 15 205 79.4 178 15 215 80.4 179 15 225 84.0 180 15 235 83.4 181 15 245 81.3 182 15 255 78.0 183 15 265 76.9 184 15 275 76.9 185 15 285 71.4 186 15 295 72.4 187 15 305 76.0 188 15 315 75.2 189 15 325 78.8 190 15 335 72.0 191 15 345 71.1 193 5 5 77.9 197 5 45 70.1 198 5 55 70.7 199 5 65 73.0 200 5 75 75.9 201 5 85 76.3 202 5 95 79.1 203 5 105 78.0 204 5 115 79.7 205 5 125 79.8 206 5 135 77.9 207 5 145 82.8 208 5 155 81.3 209 5 165 76.9 210 5 175 80.7 211 5 185 78.8 212 5 195 82.7 213 5 205 81.9 214 5 215 86.1 215 5 225 86.1 216 5 235 84.6 217 5 245 84.4 218 5 255 87.0 219 5 265 86.3 220 5 275 84.2 221 5 285 81.8 223 5 305 74.3 224 5 315 76.2 225 5 325 79.3 226 5 335 81.0 227 5 345 79.9 228 5 355 77.6 229 -5 5 81.3 230 -5 15 76.0 233 -5 45 69.6 234 -5 55 78.0 235 -5 65 80.3 236 -5 75 81.5 237 -5 85 80.1 238 -5 95 80.3 239 -5 105 79.3 240 -5 115 67.5 241 -5 125 64.9 242 -5 135 72.0 243 -5 145 75.5 244 -5 155 78.5 245 -5 165 78.3 246 -5 175 77.6 247 -5 185 77.7 248 -5 195 73.9 249 -5 205 82.8 252 -5 235 67.4 253 -5 245 78.1 254 -5 255 82.7 255 -5 265 86.2 256 -5 275 89.5 257 -5 285 88.5 260 -5 315 58.4 261 -5 325 68.5 262 -5 335 74.7 263 -5 345 84.7 264 -5 355 85.9 265 -15 5 91.2 266 -15 15 82.8 268 -15 35 72.2 269 -15 45 66.2 270 -15 55 77.2 271 -15 65 78.8 272 -15 75 79.9 273 -15 85 81.0 274 -15 95 81.2 275 -15 105 76.2 276 -15 115 67.2 277 -15 125 58.8 278 -15 135 66.5 279 -15 145 77.6 280 -15 155 79.6 281 -15 165 80.1 282 -15 175 79.5 283 -15 185 80.5 284 -15 195 81.0 285 -15 205 82.1 286 -15 215 81.6 287 -15 225 81.4 288 -15 235 78.4 289 -15 245 78.6 290 -15 255 82.0 291 -15 265 82.5 292 -15 275 88.2 293 -15 285 90.9 297 -15 325 77.1 298 -15 335 80.9 299 -15 345 84.3 300 -15 355 90.4 301 -25 5 86.5 302 -25 15 84.1 304 -25 35 82.8 305 -25 45 79.4 306 -25 55 80.5 307 -25 65 82.1 308 -25 75 81.8 309 -25 85 83.0 310 -25 95 83.4 311 -25 105 78.6 312 -25 115 71.1 316 -25 155 77.4 317 -25 165 79.1 318 -25 175 82.2 319 -25 185 83.0 320 -25 195 85.8 321 -25 205 86.1 322 -25 215 86.0 323 -25 225 84.2 324 -25 235 86.0 325 -25 245 80.2 326 -25 255 81.5 327 -25 265 75.2 328 -25 275 84.3 329 -25 285 89.9 332 -25 315 78.9 333 -25 325 82.0 334 -25 335 85.6 335 -25 345 81.2 336 -25 355 82.3 337 -35 5 84.9 338 -35 15 79.5 339 -35 25 83.4 340 -35 35 85.4 341 -35 45 85.6 342 -35 55 86.4 343 -35 65 86.0 344 -35 75 85.4 345 -35 85 86.5 346 -35 95 86.3 347 -35 105 82.8 348 -35 115 81.9 349 -35 125 81.5 350 -35 135 82.3 351 -35 145 81.4 352 -35 155 83.4 353 -35 165 85.9 354 -35 175 85.2 355 -35 185 85.0 356 -35 195 86.2 357 -35 205 88.9 358 -35 215 87.6 359 -35 225 88.2 360 -35 235 85.4 361 -35 245 86.5 362 -35 255 88.0 363 -35 265 88.2 364 -35 275 89.1 365 -35 285 86.6 367 -35 305 80.8 368 -35 315 83.3 369 -35 325 87.5 370 -35 335 86.2 371 -35 345 84.5 372 -35 355 85.8 373 -45 5 90.7 374 -45 15 90.2 375 -45 25 92.4 376 -45 35 81.9 377 -45 45 87.0 378 -45 55 89.8 379 -45 65 82.2 380 -45 75 84.4 381 -45 85 90.6 382 -45 95 87.8 383 -45 105 86.7 384 -45 115 85.5 385 -45 125 84.8 386 -45 135 85.5 387 -45 145 78.2 388 -45 155 86.1 389 -45 165 88.1 390 -45 175 84.9 391 -45 185 88.1 392 -45 195 90.3 393 -45 205 91.8 394 -45 215 93.6 395 -45 225 93.8 396 -45 235 87.6 397 -45 245 92.9 398 -45 255 89.8 399 -45 265 91.8 400 -45 275 92.0 401 -45 285 89.3 402 -45 295 74.1 403 -45 305 81.5 404 -45 315 88.0 405 -45 325 89.9 406 -45 335 85.2 407 -45 345 88.0 408 -45 355 91.7 409 -55 10 90.0 410 -55 30 90.7 411 -55 50 91.2 412 -55 70 87.1 413 -55 90 88.6 414 -55 110 90.9 415 -55 130 90.5 416 -55 150 90.1 417 -55 170 91.8 418 -55 190 89.6 419 -55 210 91.7 420 -55 230 90.9 421 -55 250 94.4 422 -55 270 91.4 423 -55 290 86.8 424 -55 310 87.3 425 -55 330 88.6 426 -55 350 95.4 429 -65 50 81.1 430 -65 70 89.6 431 -65 90 79.6 432 -65 110 89.1 433 -65 130 90.9 434 -65 150 91.0 435 -65 170 91.3 436 -65 190 89.9 441 -65 290 88.6 442 -65 310 90.5 443 -65 330 95.6 444 -65 350 91.4 449 -75 180 85.8 453 -75 340 86.1