Stratocumulus Amount-When-Present (%) December, January, February (1954 - 1997) , Ship Observations Only Global Average: 72.0 Zonal Averages 17 zones Lat.N Average 85 77.8 75 79.6 65 79.2 55 79.2 45 78.2 35 73.8 25 69.7 15 64.8 5 67.1 -5 66.2 -15 68.5 -25 69.4 -35 73.4 -45 77.3 -55 79.8 -65 78.5 -75 71.1 Grid Box Averages 386 filled boxes Box # Lat.N Lon.E Average 1 85 60 71.6 2 85 180 84.0 3 85 300 76.9 4 75 20 80.2 5 75 60 82.6 7 75 140 76.8 8 75 180 84.0 9 75 220 79.8 12 75 340 72.2 13 65 10 75.8 14 65 30 78.5 15 65 50 75.4 21 65 170 84.2 22 65 190 85.8 23 65 210 74.7 27 65 290 82.5 29 65 330 72.8 30 65 350 77.9 31 55 10 76.8 32 55 30 81.0 38 55 150 78.5 39 55 170 80.9 40 55 190 80.8 41 55 210 79.1 42 55 230 79.9 45 55 290 77.2 46 55 310 84.4 47 55 330 76.9 48 55 350 74.1 49 45 5 65.2 50 45 15 64.7 51 45 25 80.3 52 45 35 81.5 53 45 45 76.8 54 45 55 77.1 61 45 125 79.0 62 45 135 77.3 63 45 145 77.6 64 45 155 80.0 65 45 165 77.7 66 45 175 77.3 67 45 185 77.0 68 45 195 76.8 69 45 205 78.2 70 45 215 78.4 71 45 225 79.0 72 45 235 76.7 77 45 285 76.6 78 45 295 79.9 79 45 305 81.8 80 45 315 81.6 81 45 325 78.5 82 45 335 78.3 83 45 345 76.8 84 45 355 78.0 85 35 5 64.3 86 35 15 65.3 87 35 25 67.2 88 35 35 64.5 89 35 45 67.6 90 35 55 66.4 96 35 115 60.3 97 35 125 76.5 98 35 135 75.4 99 35 145 76.0 100 35 155 75.9 101 35 165 73.9 102 35 175 73.7 103 35 185 73.7 104 35 195 73.9 105 35 205 74.2 106 35 215 75.3 107 35 225 76.2 108 35 235 73.0 109 35 245 64.9 112 35 275 66.4 113 35 285 74.5 114 35 295 77.3 115 35 305 73.8 116 35 315 71.9 117 35 325 72.5 118 35 335 73.3 119 35 345 73.9 120 35 355 66.5 124 25 35 56.8 125 25 45 65.7 126 25 55 55.8 127 25 65 48.2 129 25 85 55.1 131 25 105 88.6 132 25 115 80.7 133 25 125 78.2 134 25 135 73.8 135 25 145 71.2 136 25 155 70.1 137 25 165 68.3 138 25 175 67.2 139 25 185 66.7 140 25 195 67.0 141 25 205 66.5 142 25 215 70.6 143 25 225 75.2 144 25 235 78.1 145 25 245 66.1 146 25 255 59.5 147 25 265 70.8 148 25 275 65.0 149 25 285 65.1 150 25 295 65.2 151 25 305 65.3 152 25 315 65.8 153 25 325 65.6 154 25 335 67.8 155 25 345 64.8 160 15 35 64.7 161 15 45 61.2 162 15 55 56.3 163 15 65 54.7 164 15 75 46.8 165 15 85 55.2 166 15 95 47.7 167 15 105 75.8 168 15 115 65.9 169 15 125 66.6 170 15 135 68.5 171 15 145 65.9 172 15 155 60.3 173 15 165 62.2 174 15 175 61.5 175 15 185 59.7 176 15 195 63.7 177 15 205 62.8 178 15 215 69.7 179 15 225 74.0 180 15 235 76.4 181 15 245 72.6 182 15 255 55.5 183 15 265 45.3 184 15 275 55.9 185 15 285 56.6 186 15 295 56.3 187 15 305 58.6 188 15 315 61.9 189 15 325 66.3 190 15 335 65.5 191 15 345 63.9 193 5 5 64.8 197 5 45 57.3 198 5 55 62.3 199 5 65 57.9 200 5 75 57.5 201 5 85 62.0 202 5 95 61.5 203 5 105 65.0 204 5 115 65.0 205 5 125 65.1 206 5 135 64.5 207 5 145 67.9 208 5 155 69.4 209 5 165 67.4 210 5 175 65.7 211 5 185 63.6 212 5 195 64.1 213 5 205 67.5 214 5 215 70.2 215 5 225 73.0 216 5 235 72.2 217 5 245 73.8 218 5 255 70.2 219 5 265 69.4 220 5 275 62.8 221 5 285 62.3 223 5 305 63.1 224 5 315 67.6 225 5 325 69.8 226 5 335 70.5 227 5 345 65.7 228 5 355 65.0 229 -5 5 70.8 230 -5 15 70.6 232 -5 35 53.6 233 -5 45 57.9 234 -5 55 63.0 235 -5 65 62.1 236 -5 75 63.9 237 -5 85 63.6 238 -5 95 65.3 239 -5 105 65.4 240 -5 115 63.7 241 -5 125 61.2 242 -5 135 62.8 243 -5 145 66.8 244 -5 155 69.0 245 -5 165 68.8 246 -5 175 64.7 247 -5 185 59.2 248 -5 195 62.5 249 -5 205 59.0 250 -5 215 59.4 251 -5 225 59.4 252 -5 235 61.8 253 -5 245 67.8 254 -5 255 71.7 255 -5 265 74.3 256 -5 275 70.4 257 -5 285 63.2 260 -5 315 59.6 261 -5 325 58.3 262 -5 335 61.5 263 -5 345 68.5 264 -5 355 74.0 265 -15 5 82.6 266 -15 15 73.5 268 -15 35 62.2 269 -15 45 62.5 270 -15 55 59.2 271 -15 65 61.0 272 -15 75 64.0 273 -15 85 63.2 274 -15 95 65.5 275 -15 105 65.2 276 -15 115 58.6 277 -15 125 61.0 278 -15 135 63.7 279 -15 145 63.7 280 -15 155 65.6 281 -15 165 64.7 282 -15 175 62.5 283 -15 185 64.7 284 -15 195 64.5 285 -15 205 66.0 286 -15 215 66.5 287 -15 225 61.4 288 -15 235 61.0 289 -15 245 62.6 290 -15 255 70.2 291 -15 265 73.8 292 -15 275 76.6 293 -15 285 71.8 297 -15 325 58.1 298 -15 335 61.8 299 -15 345 72.3 300 -15 355 78.7 301 -25 5 79.5 302 -25 15 75.3 304 -25 35 65.9 305 -25 45 64.7 306 -25 55 63.3 307 -25 65 63.5 308 -25 75 66.2 309 -25 85 66.5 310 -25 95 73.0 311 -25 105 73.9 312 -25 115 60.8 315 -25 145 63.6 316 -25 155 64.7 317 -25 165 62.9 318 -25 175 62.9 319 -25 185 64.9 320 -25 195 66.9 321 -25 205 70.6 322 -25 215 69.2 323 -25 225 65.8 324 -25 235 63.5 325 -25 245 63.8 326 -25 255 64.3 327 -25 265 70.8 328 -25 275 79.0 329 -25 285 81.9 332 -25 315 59.3 333 -25 325 63.2 334 -25 335 60.8 335 -25 345 62.3 336 -25 355 70.8 337 -35 5 73.8 338 -35 15 65.8 339 -35 25 66.4 340 -35 35 71.6 341 -35 45 72.1 342 -35 55 74.0 343 -35 65 72.2 344 -35 75 74.8 345 -35 85 75.1 346 -35 95 77.5 347 -35 105 77.8 348 -35 115 70.0 349 -35 125 76.3 350 -35 135 75.2 351 -35 145 68.2 352 -35 155 67.2 353 -35 165 70.2 354 -35 175 64.3 355 -35 185 68.0 356 -35 195 71.7 357 -35 205 73.6 358 -35 215 76.2 359 -35 225 76.5 360 -35 235 76.8 361 -35 245 79.5 362 -35 255 76.2 363 -35 265 78.0 364 -35 275 78.9 365 -35 285 78.6 367 -35 305 62.8 368 -35 315 68.2 369 -35 325 72.0 370 -35 335 71.1 371 -35 345 70.5 372 -35 355 70.5 373 -45 5 75.3 374 -45 15 75.8 375 -45 25 74.0 376 -45 35 76.9 377 -45 45 74.1 378 -45 55 76.6 379 -45 65 77.4 380 -45 75 76.8 381 -45 85 79.2 382 -45 95 79.4 383 -45 105 78.6 384 -45 115 79.9 385 -45 125 79.2 386 -45 135 74.9 387 -45 145 67.2 388 -45 155 73.4 389 -45 165 78.6 390 -45 175 69.9 391 -45 185 76.7 392 -45 195 78.0 393 -45 205 80.1 394 -45 215 82.7 395 -45 225 85.9 396 -45 235 86.5 397 -45 245 82.4 398 -45 255 84.1 399 -45 265 80.0 400 -45 275 80.0 401 -45 285 79.8 402 -45 295 61.9 403 -45 305 65.9 404 -45 315 72.7 405 -45 325 74.6 406 -45 335 73.0 407 -45 345 72.5 408 -45 355 79.1 409 -55 10 80.9 410 -55 30 81.7 411 -55 50 81.6 412 -55 70 79.3 413 -55 90 80.5 414 -55 110 78.6 415 -55 130 77.5 416 -55 150 83.3 417 -55 170 80.6 418 -55 190 78.1 419 -55 210 81.7 420 -55 230 85.5 421 -55 250 82.5 422 -55 270 78.9 423 -55 290 70.5 424 -55 310 74.0 425 -55 330 79.1 426 -55 350 82.0 427 -65 10 77.4 428 -65 30 57.0 429 -65 50 70.4 430 -65 70 79.6 431 -65 90 82.6 432 -65 110 75.6 433 -65 130 77.0 434 -65 150 80.7 435 -65 170 80.7 436 -65 190 78.3 437 -65 210 80.9 438 -65 230 86.6 439 -65 250 83.8 440 -65 270 83.4 441 -65 290 71.8 442 -65 310 79.4 443 -65 330 83.9 444 -65 350 80.2 449 -75 180 61.5 450 -75 220 79.8 451 -75 260 70.7 452 -75 300 75.6 453 -75 340 73.5