Stratocumulus Frequency of Occurrence (%) June, July, August (1954 - 1997) Day, Ship Observations Only Global Average: 30.5 Zonal Averages 16 zones Lat.N Average 85 26.5 75 33.7 65 37.9 55 35.9 45 33.2 35 28.7 25 22.9 15 22.5 5 22.3 -5 20.9 -15 28.2 -25 33.1 -35 35.9 -45 38.8 -55 42.0 -65 42.0 Grid Box Averages 382 filled boxes Box # Lat.N Lon.E Average 1 85 60 25.8 2 85 180 30.0 3 85 300 22.1 4 75 20 41.5 5 75 60 38.5 6 75 100 32.3 7 75 140 27.9 8 75 180 27.3 9 75 220 30.8 10 75 260 46.0 11 75 300 30.0 12 75 340 32.7 13 65 10 38.0 14 65 30 40.0 15 65 50 38.6 16 65 70 38.4 20 65 150 30.3 21 65 170 41.8 22 65 190 39.0 23 65 210 34.3 24 65 230 37.4 25 65 250 47.8 26 65 270 40.5 27 65 290 37.6 28 65 310 30.6 29 65 330 36.5 30 65 350 39.7 31 55 10 26.0 32 55 30 24.7 37 55 130 23.0 38 55 150 31.1 39 55 170 34.5 40 55 190 36.5 41 55 210 39.9 42 55 230 39.6 44 55 270 31.4 45 55 290 31.2 46 55 310 32.8 47 55 330 41.1 48 55 350 41.1 49 45 5 11.6 50 45 15 11.1 51 45 25 14.3 52 45 35 15.1 53 45 45 20.0 54 45 55 14.3 61 45 125 27.9 62 45 135 29.3 63 45 145 30.0 64 45 155 30.8 65 45 165 31.1 66 45 175 33.4 67 45 185 35.6 68 45 195 37.0 69 45 205 39.4 70 45 215 43.9 71 45 225 47.8 72 45 235 39.0 77 45 285 18.6 78 45 295 17.6 79 45 305 24.0 80 45 315 28.6 81 45 325 34.5 82 45 335 37.8 83 45 345 38.9 84 45 355 26.4 85 35 5 10.8 86 35 15 7.7 87 35 25 4.4 88 35 35 8.2 89 35 45 27.8 90 35 55 16.8 96 35 115 21.3 97 35 125 22.7 98 35 135 24.0 99 35 145 30.5 100 35 155 34.0 101 35 165 32.9 102 35 175 32.3 103 35 185 33.0 104 35 195 33.1 105 35 205 37.4 106 35 215 44.2 107 35 225 52.8 108 35 235 43.1 109 35 245 42.6 112 35 275 13.9 113 35 285 19.7 114 35 295 19.9 115 35 305 18.8 116 35 315 17.5 117 35 325 21.9 118 35 335 30.6 119 35 345 32.4 120 35 355 12.7 124 25 35 2.3 125 25 45 4.5 126 25 55 7.2 127 25 65 27.0 128 25 75 30.2 129 25 85 22.0 130 25 95 19.1 131 25 105 16.6 132 25 115 21.1 133 25 125 21.0 134 25 135 17.6 135 25 145 16.8 136 25 155 16.2 137 25 165 16.0 138 25 175 15.7 139 25 185 14.6 140 25 195 16.3 141 25 205 24.2 142 25 215 38.9 143 25 225 55.5 144 25 235 61.3 145 25 245 35.0 146 25 255 19.2 147 25 265 13.9 148 25 275 13.9 149 25 285 14.5 150 25 295 12.4 151 25 305 11.5 152 25 315 14.2 153 25 325 22.0 154 25 335 32.6 155 25 345 20.5 156 25 355 17.9 160 15 35 5.5 161 15 45 7.9 162 15 55 14.9 163 15 65 26.0 164 15 75 25.2 165 15 85 22.9 166 15 95 24.9 167 15 105 18.6 168 15 115 21.9 169 15 125 20.2 170 15 135 17.8 171 15 145 16.9 172 15 155 14.9 173 15 165 12.7 174 15 175 14.5 175 15 185 17.2 176 15 195 17.1 177 15 205 23.8 178 15 215 30.7 179 15 225 38.2 180 15 235 42.7 181 15 245 29.6 182 15 255 20.3 183 15 265 22.1 184 15 275 21.4 185 15 285 17.1 186 15 295 13.8 187 15 305 15.9 188 15 315 23.5 189 15 325 33.8 190 15 335 32.9 191 15 345 20.9 193 5 5 29.1 197 5 45 15.5 198 5 55 14.6 199 5 65 16.5 200 5 75 20.4 201 5 85 20.0 202 5 95 22.4 203 5 105 20.8 204 5 115 20.8 205 5 125 20.7 206 5 135 17.7 207 5 145 20.3 208 5 155 19.4 209 5 165 19.8 210 5 175 18.7 211 5 185 18.4 212 5 195 16.7 213 5 205 19.5 214 5 215 25.2 215 5 225 23.1 216 5 235 25.8 217 5 245 29.4 218 5 255 32.7 219 5 265 36.6 220 5 275 33.5 221 5 285 30.5 222 5 295 26.2 223 5 305 19.4 224 5 315 19.0 225 5 325 16.2 226 5 335 21.7 227 5 345 27.9 228 5 355 28.6 229 -5 5 35.6 230 -5 15 46.0 232 -5 35 18.3 233 -5 45 15.1 234 -5 55 18.0 235 -5 65 17.9 236 -5 75 20.6 237 -5 85 19.8 238 -5 95 20.7 239 -5 105 17.7 240 -5 115 16.4 241 -5 125 16.4 242 -5 135 19.4 243 -5 145 20.9 244 -5 155 23.3 245 -5 165 17.3 246 -5 175 15.1 247 -5 185 12.4 248 -5 195 12.7 249 -5 205 14.7 250 -5 215 13.9 251 -5 225 11.1 252 -5 235 11.2 253 -5 245 18.2 254 -5 255 29.5 255 -5 265 46.5 256 -5 275 54.2 257 -5 285 55.3 260 -5 315 14.6 261 -5 325 14.8 262 -5 335 14.6 263 -5 345 20.2 264 -5 355 29.7 265 -15 5 62.5 266 -15 15 40.4 268 -15 35 12.7 269 -15 45 13.4 270 -15 55 16.8 271 -15 65 19.1 272 -15 75 22.6 273 -15 85 27.8 274 -15 95 26.7 275 -15 105 26.0 276 -15 115 14.7 277 -15 125 8.1 278 -15 135 17.3 279 -15 145 24.4 280 -15 155 24.8 281 -15 165 26.9 282 -15 175 26.8 283 -15 185 25.5 284 -15 195 23.4 285 -15 205 21.4 286 -15 215 18.7 287 -15 225 15.3 288 -15 235 16.6 289 -15 245 22.2 290 -15 255 32.9 291 -15 265 47.9 292 -15 275 67.2 293 -15 285 62.4 297 -15 325 17.1 298 -15 335 21.9 299 -15 345 31.3 300 -15 355 53.6 301 -25 5 49.3 302 -25 15 31.5 304 -25 35 15.4 305 -25 45 19.7 306 -25 55 23.7 307 -25 65 31.4 308 -25 75 33.6 309 -25 85 36.0 310 -25 95 37.1 311 -25 105 36.9 312 -25 115 24.0 315 -25 145 20.7 316 -25 155 20.1 317 -25 165 26.5 318 -25 175 29.7 319 -25 185 29.5 320 -25 195 31.7 321 -25 205 35.7 322 -25 215 34.4 323 -25 225 35.1 324 -25 235 27.1 325 -25 245 25.4 326 -25 255 32.6 327 -25 265 42.3 328 -25 275 51.5 329 -25 285 55.2 332 -25 315 24.0 333 -25 325 24.8 334 -25 335 31.1 335 -25 345 34.4 336 -25 355 42.3 337 -35 5 43.2 338 -35 15 31.9 339 -35 25 22.3 340 -35 35 22.3 341 -35 45 32.9 342 -35 55 37.9 343 -35 65 38.7 344 -35 75 41.3 345 -35 85 44.7 346 -35 95 40.2 347 -35 105 38.8 348 -35 115 33.5 349 -35 125 34.0 350 -35 135 35.2 351 -35 145 33.9 352 -35 155 27.3 353 -35 165 31.6 354 -35 175 30.7 355 -35 185 30.1 356 -35 195 33.2 357 -35 205 33.0 358 -35 215 32.9 359 -35 225 33.8 360 -35 235 34.5 361 -35 245 36.6 362 -35 255 39.4 363 -35 265 44.5 364 -35 275 46.7 365 -35 285 44.7 366 -35 295 33.2 367 -35 305 31.6 368 -35 315 32.7 369 -35 325 39.2 370 -35 335 38.9 371 -35 345 37.0 372 -35 355 38.3 373 -45 5 32.1 374 -45 15 30.8 375 -45 25 34.9 376 -45 35 45.7 377 -45 45 37.8 378 -45 55 35.6 379 -45 65 35.9 380 -45 75 39.9 381 -45 85 34.8 382 -45 95 24.3 383 -45 105 40.8 384 -45 115 36.8 385 -45 125 42.4 386 -45 135 40.5 387 -45 145 34.5 388 -45 155 34.7 389 -45 165 36.8 390 -45 175 40.8 391 -45 185 42.9 392 -45 195 39.8 393 -45 205 38.1 394 -45 215 41.0 395 -45 225 40.4 396 -45 235 39.6 397 -45 245 46.5 398 -45 255 45.3 399 -45 265 42.3 400 -45 275 50.3 401 -45 285 42.7 402 -45 295 37.0 403 -45 305 36.3 404 -45 315 40.6 405 -45 325 38.8 406 -45 335 35.6 407 -45 345 38.8 408 -45 355 41.0 409 -55 10 36.1 410 -55 30 35.4 411 -55 50 37.6 412 -55 70 35.9 415 -55 130 52.5 416 -55 150 42.0 417 -55 170 60.7 418 -55 190 39.2 419 -55 210 43.8 420 -55 230 39.6 421 -55 250 38.0 422 -55 270 38.7 423 -55 290 42.6 424 -55 310 51.1 425 -55 330 44.0 426 -55 350 35.3 427 -65 10 39.3 429 -65 50 46.5 434 -65 150 38.5 442 -65 310 45.0 444 -65 350 41.5