Stratocumulus Frequency of Occurrence (%) June (1954 - 1997) Day, Ship Observations Only Global Average: 30.4 Zonal Averages 16 zones Lat.N Average 85 29.5 75 36.0 65 38.6 55 36.6 45 34.5 35 32.4 25 24.5 15 22.8 5 21.8 -5 18.5 -15 25.9 -25 31.4 -35 35.0 -45 40.2 -55 44.8 -65 38.6 Grid Box Averages 359 filled boxes Box # Lat.N Lon.E Average 1 85 60 35.1 2 85 180 30.9 3 85 300 19.4 4 75 20 43.4 5 75 60 38.0 6 75 100 28.6 7 75 140 34.6 8 75 180 32.8 9 75 220 34.5 10 75 260 45.7 11 75 300 25.4 12 75 340 36.9 13 65 10 37.2 14 65 30 39.6 15 65 50 36.6 20 65 150 27.4 21 65 170 43.3 22 65 190 40.9 23 65 210 35.3 27 65 290 36.5 29 65 330 38.8 30 65 350 39.0 31 55 10 26.1 32 55 30 23.5 37 55 130 20.7 38 55 150 29.6 39 55 170 36.7 40 55 190 40.1 41 55 210 40.9 42 55 230 39.3 45 55 290 24.5 46 55 310 34.0 47 55 330 40.4 48 55 350 39.9 49 45 5 14.6 50 45 15 14.7 51 45 25 17.4 52 45 35 19.1 53 45 45 24.6 54 45 55 16.8 61 45 125 27.3 62 45 135 27.9 63 45 145 28.0 64 45 155 31.1 65 45 165 34.0 66 45 175 38.3 67 45 185 41.0 68 45 195 40.4 69 45 205 41.7 70 45 215 43.6 71 45 225 46.5 72 45 235 39.6 77 45 285 17.8 78 45 295 18.3 79 45 305 25.0 80 45 315 30.0 81 45 325 35.9 82 45 335 38.4 83 45 345 37.8 84 45 355 26.1 85 35 5 13.5 86 35 15 10.5 87 35 25 6.6 88 35 35 9.2 89 35 45 35.9 90 35 55 22.0 96 35 115 20.3 97 35 125 23.3 98 35 135 28.2 99 35 145 35.2 100 35 155 38.7 101 35 165 39.8 102 35 175 39.1 103 35 185 39.5 104 35 195 38.9 105 35 205 40.8 106 35 215 47.7 107 35 225 53.6 108 35 235 41.5 109 35 245 44.4 112 35 275 15.6 113 35 285 21.1 114 35 295 22.6 115 35 305 23.6 116 35 315 23.0 117 35 325 27.1 118 35 335 34.5 119 35 345 34.5 120 35 355 15.2 124 25 35 2.0 125 25 45 9.4 126 25 55 4.6 127 25 65 17.7 128 25 75 19.5 129 25 85 16.9 131 25 105 18.0 132 25 115 24.6 133 25 125 27.5 134 25 135 22.9 135 25 145 18.0 136 25 155 17.9 137 25 165 19.2 138 25 175 19.9 139 25 185 17.3 140 25 195 19.0 141 25 205 25.3 142 25 215 40.5 143 25 225 56.2 144 25 235 61.2 145 25 245 40.4 146 25 255 21.3 147 25 265 13.8 148 25 275 14.8 149 25 285 17.5 150 25 295 15.2 151 25 305 13.1 152 25 315 14.9 153 25 325 20.6 154 25 335 30.8 155 25 345 20.4 160 15 35 3.9 161 15 45 5.7 162 15 55 14.5 163 15 65 21.1 164 15 75 22.0 165 15 85 23.9 166 15 95 25.9 167 15 105 17.6 168 15 115 20.4 169 15 125 17.1 170 15 135 13.8 171 15 145 12.5 172 15 155 12.3 173 15 165 13.2 174 15 175 15.0 175 15 185 19.3 176 15 195 18.2 177 15 205 22.4 178 15 215 30.8 179 15 225 41.3 180 15 235 48.7 181 15 245 38.0 182 15 255 21.3 183 15 265 22.4 184 15 275 22.7 185 15 285 18.8 186 15 295 14.4 187 15 305 17.5 188 15 315 25.3 189 15 325 35.6 190 15 335 33.2 191 15 345 16.3 193 5 5 27.0 197 5 45 13.5 198 5 55 13.6 199 5 65 16.6 200 5 75 20.9 201 5 85 19.6 202 5 95 21.9 203 5 105 20.0 204 5 115 19.9 205 5 125 21.4 206 5 135 16.5 207 5 145 20.6 208 5 155 19.1 209 5 165 19.9 210 5 175 18.3 211 5 185 23.1 212 5 195 16.2 213 5 205 19.7 214 5 215 24.5 215 5 225 24.2 216 5 235 23.7 217 5 245 24.7 218 5 255 27.1 219 5 265 32.8 220 5 275 32.1 221 5 285 30.4 222 5 295 26.6 223 5 305 23.1 224 5 315 21.1 225 5 325 18.4 226 5 335 22.9 227 5 345 25.6 228 5 355 24.6 229 -5 5 28.6 230 -5 15 38.0 232 -5 35 18.5 233 -5 45 14.1 234 -5 55 16.3 235 -5 65 17.0 236 -5 75 20.1 237 -5 85 18.2 238 -5 95 18.3 239 -5 105 17.1 240 -5 115 17.2 241 -5 125 16.9 242 -5 135 20.4 243 -5 145 19.3 244 -5 155 20.9 245 -5 165 13.4 246 -5 175 17.2 247 -5 185 10.8 248 -5 195 12.5 249 -5 205 13.4 250 -5 215 14.4 251 -5 225 12.5 252 -5 235 8.8 253 -5 245 12.1 254 -5 255 22.5 255 -5 265 37.9 256 -5 275 47.3 257 -5 285 54.5 260 -5 315 15.5 261 -5 325 15.2 262 -5 335 13.1 263 -5 345 16.1 264 -5 355 22.1 265 -15 5 53.2 266 -15 15 34.5 268 -15 35 14.1 269 -15 45 13.6 270 -15 55 15.9 271 -15 65 18.6 272 -15 75 21.5 273 -15 85 24.6 274 -15 95 26.4 275 -15 105 26.0 276 -15 115 15.7 277 -15 125 9.9 278 -15 135 19.2 279 -15 145 26.1 280 -15 155 24.4 281 -15 165 24.8 282 -15 175 24.3 283 -15 185 23.4 284 -15 195 21.6 285 -15 205 20.4 286 -15 215 19.0 287 -15 225 14.8 288 -15 235 13.6 289 -15 245 18.8 290 -15 255 26.8 291 -15 265 43.9 292 -15 275 63.6 293 -15 285 59.5 297 -15 325 17.1 298 -15 335 18.6 299 -15 345 26.2 300 -15 355 42.3 301 -25 5 45.0 302 -25 15 27.4 304 -25 35 14.2 305 -25 45 19.7 306 -25 55 23.7 307 -25 65 29.2 308 -25 75 32.7 309 -25 85 30.9 310 -25 95 34.5 311 -25 105 35.3 312 -25 115 26.1 315 -25 145 20.8 316 -25 155 21.4 317 -25 165 27.9 318 -25 175 30.1 319 -25 185 30.2 320 -25 195 30.0 321 -25 205 36.2 322 -25 215 32.5 323 -25 225 33.3 324 -25 235 24.9 325 -25 245 23.3 326 -25 255 32.5 327 -25 265 35.8 328 -25 275 48.0 329 -25 285 55.0 332 -25 315 23.4 333 -25 325 24.1 334 -25 335 28.0 335 -25 345 30.6 336 -25 355 37.0 337 -35 5 39.0 338 -35 15 30.4 339 -35 25 22.2 340 -35 35 19.9 341 -35 45 29.9 342 -35 55 36.1 343 -35 65 36.4 344 -35 75 38.8 345 -35 85 41.2 346 -35 95 36.8 347 -35 105 36.0 348 -35 115 32.5 349 -35 125 34.5 350 -35 135 36.7 351 -35 145 35.9 352 -35 155 28.8 353 -35 165 32.6 354 -35 175 31.7 355 -35 185 30.3 356 -35 195 34.4 357 -35 205 34.4 358 -35 215 34.0 359 -35 225 32.5 360 -35 235 34.0 361 -35 245 32.0 362 -35 255 35.1 363 -35 265 43.9 364 -35 275 44.5 365 -35 285 47.4 367 -35 305 31.9 368 -35 315 33.0 369 -35 325 40.9 370 -35 335 37.3 371 -35 345 38.9 372 -35 355 36.6 376 -45 35 43.6 377 -45 45 40.5 378 -45 55 42.0 379 -45 65 39.0 380 -45 75 44.6 383 -45 105 39.5 384 -45 115 41.8 385 -45 125 39.8 386 -45 135 38.6 387 -45 145 34.3 388 -45 155 36.6 389 -45 165 38.4 390 -45 175 39.6 391 -45 185 41.7 392 -45 195 34.8 393 -45 205 37.6 394 -45 215 38.7 395 -45 225 39.1 396 -45 235 35.1 397 -45 245 44.8 398 -45 255 46.9 399 -45 265 46.1 400 -45 275 54.0 401 -45 285 48.2 402 -45 295 38.8 403 -45 305 36.0 404 -45 315 38.6 405 -45 325 39.1 406 -45 335 37.4 407 -45 345 34.7 408 -45 355 39.4 409 -55 10 43.0 411 -55 50 36.3 412 -55 70 40.1 417 -55 170 68.5 419 -55 210 51.4 420 -55 230 39.2 421 -55 250 40.2 422 -55 270 38.0 423 -55 290 42.6 424 -55 310 51.0 425 -55 330 42.8 442 -65 310 38.6