Stratocumulus Frequency of Occurrence (%) June, July, August (1954 - 1997) Night, Ship Observations Only Global Average: 31.1 Zonal Averages 15 zones Lat.N Average 85 25.5 75 33.1 65 37.6 55 36.6 45 34.3 35 31.9 25 25.2 15 24.0 5 24.0 -5 22.6 -15 30.1 -25 34.6 -35 34.6 -45 38.7 -55 44.0 Grid Box Averages 351 filled boxes Box # Lat.N Lon.E Average 1 85 60 25.3 2 85 180 28.3 3 85 300 21.8 4 75 20 41.2 5 75 60 40.0 6 75 100 33.3 7 75 140 26.1 8 75 180 26.5 9 75 220 30.6 10 75 260 44.6 11 75 300 27.3 12 75 340 30.9 13 65 10 39.4 14 65 30 42.1 15 65 50 40.6 16 65 70 40.2 20 65 150 29.9 21 65 170 42.3 22 65 190 37.6 23 65 210 38.9 24 65 230 31.3 25 65 250 38.2 26 65 270 38.7 27 65 290 34.1 28 65 310 28.4 29 65 330 37.9 30 65 350 40.4 31 55 10 28.9 32 55 30 26.6 37 55 130 27.7 38 55 150 28.6 39 55 170 33.4 40 55 190 36.0 41 55 210 40.5 42 55 230 40.2 44 55 270 34.3 45 55 290 31.1 46 55 310 33.9 47 55 330 42.8 48 55 350 45.2 49 45 5 14.0 50 45 15 12.4 51 45 25 14.9 52 45 35 17.1 53 45 45 20.0 54 45 55 20.4 62 45 135 27.6 63 45 145 27.5 64 45 155 29.9 65 45 165 29.7 66 45 175 32.4 67 45 185 34.9 68 45 195 37.7 69 45 205 40.5 70 45 215 44.9 71 45 225 49.5 72 45 235 41.7 77 45 285 19.0 78 45 295 19.4 79 45 305 23.9 80 45 315 29.6 81 45 325 38.6 82 45 335 42.0 83 45 345 43.9 84 45 355 31.0 85 35 5 14.9 86 35 15 7.8 87 35 25 5.7 88 35 35 10.8 96 35 115 27.1 97 35 125 23.0 98 35 135 23.7 99 35 145 33.8 100 35 155 38.1 101 35 165 36.7 102 35 175 34.3 103 35 185 34.1 104 35 195 35.8 105 35 205 42.5 106 35 215 49.2 107 35 225 60.0 108 35 235 42.7 109 35 245 43.1 112 35 275 15.6 113 35 285 20.1 114 35 295 22.7 115 35 305 21.6 116 35 315 18.6 117 35 325 26.4 118 35 335 38.5 119 35 345 41.0 120 35 355 18.6 124 25 35 2.9 125 25 45 3.2 126 25 55 6.9 127 25 65 29.0 128 25 75 25.2 129 25 85 31.7 130 25 95 22.6 131 25 105 20.8 132 25 115 22.3 133 25 125 22.9 134 25 135 18.9 135 25 145 19.3 136 25 155 18.5 137 25 165 18.4 138 25 175 17.1 139 25 185 16.3 140 25 195 17.2 141 25 205 26.6 142 25 215 44.8 143 25 225 60.4 144 25 235 64.0 145 25 245 36.8 146 25 255 26.9 147 25 265 13.8 148 25 275 12.9 149 25 285 16.7 150 25 295 13.9 151 25 305 11.9 152 25 315 14.8 153 25 325 23.3 154 25 335 39.8 155 25 345 28.8 160 15 35 8.1 161 15 45 11.2 162 15 55 13.8 163 15 65 25.3 164 15 75 26.0 165 15 85 24.9 166 15 95 22.4 167 15 105 19.2 168 15 115 24.6 169 15 125 23.5 170 15 135 20.6 171 15 145 18.9 172 15 155 16.5 173 15 165 13.6 174 15 175 17.0 175 15 185 16.4 176 15 195 18.9 177 15 205 23.9 178 15 215 34.8 179 15 225 42.9 180 15 235 46.7 181 15 245 32.0 182 15 255 24.4 183 15 265 23.9 184 15 275 19.9 185 15 285 19.7 186 15 295 14.5 187 15 305 16.0 188 15 315 23.0 189 15 325 33.9 190 15 335 34.7 191 15 345 20.0 193 5 5 32.8 197 5 45 14.5 198 5 55 13.2 199 5 65 15.1 200 5 75 19.1 201 5 85 21.7 202 5 95 22.6 203 5 105 23.3 204 5 115 22.8 205 5 125 23.6 206 5 135 17.4 207 5 145 23.6 208 5 155 22.7 209 5 165 23.1 210 5 175 19.8 211 5 185 18.0 212 5 195 17.4 213 5 205 21.6 214 5 215 27.8 215 5 225 28.1 216 5 235 29.2 217 5 245 32.0 218 5 255 34.8 219 5 265 39.6 220 5 275 32.8 221 5 285 33.5 223 5 305 19.9 224 5 315 19.9 225 5 325 17.5 226 5 335 23.3 227 5 345 29.0 228 5 355 34.8 229 -5 5 43.8 230 -5 15 36.7 232 -5 35 15.5 233 -5 45 15.7 234 -5 55 19.7 235 -5 65 19.2 236 -5 75 21.3 237 -5 85 21.4 238 -5 95 21.0 239 -5 105 18.7 240 -5 115 14.7 241 -5 125 16.9 242 -5 135 20.7 243 -5 145 20.8 244 -5 155 25.2 245 -5 165 17.6 246 -5 175 14.2 247 -5 185 13.2 248 -5 195 15.5 249 -5 205 12.0 250 -5 215 13.0 251 -5 225 13.3 252 -5 235 11.1 253 -5 245 18.5 254 -5 255 35.5 255 -5 265 53.8 256 -5 275 56.3 257 -5 285 48.7 260 -5 315 13.6 261 -5 325 16.3 262 -5 335 16.7 263 -5 345 21.9 264 -5 355 40.0 265 -15 5 68.0 266 -15 15 36.9 268 -15 35 10.1 269 -15 45 11.7 270 -15 55 18.6 271 -15 65 22.8 272 -15 75 26.1 273 -15 85 30.2 274 -15 95 29.9 275 -15 105 26.2 276 -15 115 11.8 277 -15 125 5.0 278 -15 135 18.4 279 -15 145 21.7 280 -15 155 27.9 281 -15 165 28.9 282 -15 175 30.2 283 -15 185 26.2 284 -15 195 21.6 285 -15 205 22.6 286 -15 215 19.5 287 -15 225 15.4 288 -15 235 21.3 289 -15 245 23.7 290 -15 255 36.8 291 -15 265 49.3 292 -15 275 71.7 293 -15 285 63.3 297 -15 325 17.7 298 -15 335 26.0 299 -15 345 32.2 300 -15 355 62.4 301 -25 5 56.0 302 -25 15 26.7 304 -25 35 14.4 305 -25 45 21.4 306 -25 55 25.0 307 -25 65 35.3 308 -25 75 36.9 309 -25 85 42.5 310 -25 95 42.7 311 -25 105 33.3 312 -25 115 20.6 315 -25 145 12.1 316 -25 155 16.9 317 -25 165 28.1 318 -25 175 32.4 319 -25 185 34.4 320 -25 195 32.4 321 -25 205 36.3 322 -25 215 37.2 323 -25 225 33.5 324 -25 235 30.6 325 -25 245 23.7 326 -25 255 25.3 327 -25 265 49.2 328 -25 275 55.2 329 -25 285 53.7 332 -25 315 23.4 333 -25 325 24.5 334 -25 335 31.8 335 -25 345 38.6 336 -25 355 45.8 337 -35 5 45.4 338 -35 15 27.6 339 -35 25 17.5 340 -35 35 20.4 341 -35 45 33.1 342 -35 55 36.2 343 -35 65 39.6 344 -35 75 46.0 345 -35 85 43.5 346 -35 95 42.9 347 -35 105 37.9 348 -35 115 28.5 349 -35 125 29.9 350 -35 135 33.6 351 -35 145 32.7 352 -35 155 23.9 353 -35 165 30.0 354 -35 175 29.4 355 -35 185 31.5 356 -35 195 29.9 357 -35 205 32.3 358 -35 215 33.3 359 -35 225 36.2 360 -35 235 31.5 361 -35 245 36.9 363 -35 265 40.6 364 -35 275 48.3 365 -35 285 41.2 367 -35 305 24.6 368 -35 315 29.1 369 -35 325 37.8 370 -35 335 34.4 371 -35 345 32.1 372 -35 355 40.3 377 -45 45 36.1 378 -45 55 36.9 379 -45 65 24.9 380 -45 75 33.3 385 -45 125 36.9 386 -45 135 37.9 387 -45 145 32.9 388 -45 155 35.9 389 -45 165 32.7 390 -45 175 36.9 391 -45 185 42.4 392 -45 195 42.6 393 -45 205 40.3 394 -45 215 33.6 395 -45 225 39.8 396 -45 235 39.9 397 -45 245 47.9 398 -45 255 44.7 399 -45 265 45.7 400 -45 275 48.0 401 -45 285 45.8 402 -45 295 34.0 403 -45 305 32.5 404 -45 315 32.1 405 -45 325 38.1 408 -45 355 54.4 412 -55 70 34.6 417 -55 170 68.9 420 -55 230 43.0 422 -55 270 39.4 423 -55 290 41.1 424 -55 310 45.6 425 -55 330 35.1