Stratocumulus Amount-When-Present (%) June, July, August (1954 - 1997) , Ship Observations Only Global Average: 72.8 Zonal Averages 16 zones Lat.N Average 85 83.0 75 80.8 65 77.3 55 80.7 45 81.4 35 73.0 25 69.0 15 67.7 5 68.9 -5 68.3 -15 72.8 -25 71.0 -35 73.8 -45 76.6 -55 77.6 -65 72.8 Grid Box Averages 378 filled boxes Box # Lat.N Lon.E Average 1 85 60 80.5 2 85 180 89.1 3 85 300 75.0 4 75 20 83.5 5 75 60 83.8 6 75 100 79.5 7 75 140 84.6 8 75 180 85.8 9 75 220 76.8 10 75 260 65.7 11 75 300 70.2 12 75 340 84.3 13 65 10 78.6 14 65 30 77.2 15 65 50 78.7 16 65 70 77.3 20 65 150 80.3 21 65 170 84.5 22 65 190 82.7 23 65 210 75.7 24 65 230 62.8 25 65 250 68.1 26 65 270 64.7 27 65 290 63.5 28 65 310 76.8 29 65 330 79.4 30 65 350 82.1 31 55 10 72.0 32 55 30 66.0 37 55 130 79.1 38 55 150 81.3 39 55 170 86.3 40 55 190 86.8 41 55 210 84.2 42 55 230 82.8 44 55 270 62.1 45 55 290 63.4 46 55 310 79.6 47 55 330 82.3 48 55 350 73.7 49 45 5 55.2 50 45 15 48.1 51 45 25 63.1 52 45 35 64.3 53 45 45 70.8 54 45 55 71.5 61 45 125 69.7 62 45 135 79.8 63 45 145 83.0 64 45 155 86.0 65 45 165 88.7 66 45 175 88.8 67 45 185 87.9 68 45 195 86.5 69 45 205 85.3 70 45 215 84.9 71 45 225 83.5 72 45 235 78.8 77 45 285 67.1 78 45 295 69.0 79 45 305 72.2 80 45 315 76.6 81 45 325 78.1 82 45 335 78.7 83 45 345 75.7 84 45 355 71.9 85 35 5 58.5 86 35 15 50.5 87 35 25 48.0 88 35 35 52.7 89 35 45 68.7 90 35 55 66.6 96 35 115 60.7 97 35 125 67.1 98 35 135 67.4 99 35 145 74.4 100 35 155 76.7 101 35 165 74.2 102 35 175 73.5 103 35 185 73.1 104 35 195 72.6 105 35 205 74.2 106 35 215 77.7 107 35 225 81.1 108 35 235 83.2 109 35 245 79.8 112 35 275 55.9 113 35 285 60.9 114 35 295 65.0 115 35 305 64.9 116 35 315 62.6 117 35 325 65.1 118 35 335 71.2 119 35 345 75.7 120 35 355 63.5 124 25 35 50.4 125 25 45 60.0 126 25 55 63.8 127 25 65 72.0 128 25 75 64.6 129 25 85 64.5 130 25 95 67.7 131 25 105 57.5 132 25 115 61.1 133 25 125 61.5 134 25 135 63.7 135 25 145 63.3 136 25 155 61.3 137 25 165 61.2 138 25 175 60.2 139 25 185 59.0 140 25 195 57.1 141 25 205 60.9 142 25 215 73.0 143 25 225 81.7 144 25 235 87.0 145 25 245 75.1 146 25 255 59.0 147 25 265 54.2 148 25 275 53.1 149 25 285 55.6 150 25 295 57.4 151 25 305 55.9 152 25 315 58.2 153 25 325 64.5 154 25 335 73.0 155 25 345 73.9 160 15 35 58.9 161 15 45 64.6 162 15 55 67.0 163 15 65 70.8 164 15 75 68.9 165 15 85 63.3 166 15 95 67.1 167 15 105 56.6 168 15 115 64.5 169 15 125 65.6 170 15 135 68.6 171 15 145 68.5 172 15 155 63.2 173 15 165 59.0 174 15 175 60.0 175 15 185 60.0 176 15 195 59.5 177 15 205 62.9 178 15 215 72.0 179 15 225 77.0 180 15 235 79.6 181 15 245 72.4 182 15 255 62.2 183 15 265 62.1 184 15 275 59.8 185 15 285 58.1 186 15 295 55.7 187 15 305 61.5 188 15 315 64.3 189 15 325 73.2 190 15 335 74.3 191 15 345 71.0 193 5 5 75.7 197 5 45 58.3 198 5 55 58.4 199 5 65 60.5 200 5 75 63.5 201 5 85 60.4 202 5 95 64.2 203 5 105 62.2 204 5 115 64.5 205 5 125 68.9 206 5 135 66.5 207 5 145 71.6 208 5 155 70.7 209 5 165 61.6 210 5 175 65.3 211 5 185 65.8 212 5 195 65.4 213 5 205 63.6 214 5 215 69.7 215 5 225 69.4 216 5 235 72.9 217 5 245 74.9 218 5 255 75.6 219 5 265 76.4 220 5 275 73.6 221 5 285 70.4 222 5 295 74.1 223 5 305 63.6 224 5 315 63.8 225 5 325 66.8 226 5 335 70.9 227 5 345 75.9 228 5 355 76.0 229 -5 5 80.1 230 -5 15 82.5 232 -5 35 64.4 233 -5 45 61.7 234 -5 55 61.4 235 -5 65 62.5 236 -5 75 64.3 237 -5 85 65.1 238 -5 95 65.5 239 -5 105 62.4 240 -5 115 53.5 241 -5 125 57.2 242 -5 135 65.9 243 -5 145 63.5 244 -5 155 71.9 245 -5 165 64.5 246 -5 175 60.1 247 -5 185 54.8 248 -5 195 58.1 249 -5 205 54.6 250 -5 215 57.2 251 -5 225 59.7 252 -5 235 58.6 253 -5 245 62.1 254 -5 255 70.9 255 -5 265 76.2 256 -5 275 86.1 257 -5 285 87.3 260 -5 315 53.7 261 -5 325 61.2 262 -5 335 60.9 263 -5 345 66.9 264 -5 355 77.7 265 -15 5 86.8 266 -15 15 81.8 268 -15 35 55.5 269 -15 45 58.1 270 -15 55 64.1 271 -15 65 65.9 272 -15 75 67.0 273 -15 85 70.2 274 -15 95 69.4 275 -15 105 66.8 276 -15 115 60.0 277 -15 125 46.6 278 -15 135 62.0 279 -15 145 64.9 280 -15 155 70.3 281 -15 165 68.9 282 -15 175 66.7 283 -15 185 65.8 284 -15 195 68.1 285 -15 205 64.4 286 -15 215 62.3 287 -15 225 63.6 288 -15 235 64.2 289 -15 245 66.0 290 -15 255 71.8 291 -15 265 75.9 292 -15 275 86.6 293 -15 285 89.0 297 -15 325 59.0 298 -15 335 63.9 299 -15 345 70.3 300 -15 355 84.4 301 -25 5 79.8 302 -25 15 73.3 304 -25 35 63.1 305 -25 45 63.6 306 -25 55 65.3 307 -25 65 70.1 308 -25 75 73.1 309 -25 85 75.5 310 -25 95 72.4 311 -25 105 69.7 312 -25 115 63.7 315 -25 145 60.1 316 -25 155 63.2 317 -25 165 66.0 318 -25 175 66.5 319 -25 185 67.4 320 -25 195 68.8 321 -25 205 66.0 322 -25 215 66.1 323 -25 225 64.3 324 -25 235 64.7 325 -25 245 70.0 326 -25 255 67.0 327 -25 265 76.5 328 -25 275 78.6 329 -25 285 84.0 332 -25 315 61.2 333 -25 325 64.0 334 -25 335 69.0 335 -25 345 70.1 336 -25 355 75.7 337 -35 5 75.7 338 -35 15 68.0 339 -35 25 63.3 340 -35 35 68.1 341 -35 45 71.6 342 -35 55 72.4 343 -35 65 77.0 344 -35 75 76.4 345 -35 85 78.1 346 -35 95 74.6 347 -35 105 74.6 348 -35 115 68.8 349 -35 125 68.4 350 -35 135 70.9 351 -35 145 68.9 352 -35 155 63.2 353 -35 165 69.2 354 -35 175 67.0 355 -35 185 69.3 356 -35 195 71.2 357 -35 205 71.2 358 -35 215 76.7 359 -35 225 72.7 360 -35 235 73.1 361 -35 245 80.4 362 -35 255 80.6 363 -35 265 79.1 364 -35 275 79.6 365 -35 285 75.0 366 -35 295 68.1 367 -35 305 71.5 368 -35 315 72.7 369 -35 325 74.8 370 -35 335 75.6 371 -35 345 74.0 372 -35 355 74.2 373 -45 5 73.4 374 -45 15 76.9 375 -45 25 72.8 376 -45 35 74.5 377 -45 45 77.3 378 -45 55 74.8 379 -45 65 80.5 380 -45 75 77.7 381 -45 85 84.1 383 -45 105 74.3 384 -45 115 75.5 385 -45 125 75.1 386 -45 135 75.7 387 -45 145 64.5 388 -45 155 74.1 389 -45 165 73.9 390 -45 175 70.6 391 -45 185 77.5 392 -45 195 76.5 393 -45 205 78.2 394 -45 215 77.2 395 -45 225 74.2 396 -45 235 81.6 397 -45 245 82.8 398 -45 255 79.0 399 -45 265 84.1 400 -45 275 79.4 401 -45 285 80.0 402 -45 295 68.8 403 -45 305 72.4 404 -45 315 75.7 405 -45 325 77.4 406 -45 335 76.3 407 -45 345 78.1 408 -45 355 76.9 409 -55 10 74.4 411 -55 50 83.3 412 -55 70 77.0 415 -55 130 72.2 416 -55 150 75.7 417 -55 170 80.0 418 -55 190 85.0 419 -55 210 79.5 420 -55 230 77.1 421 -55 250 78.8 422 -55 270 80.8 423 -55 290 76.8 424 -55 310 71.5 425 -55 330 75.4 426 -55 350 78.3 427 -65 10 77.3 429 -65 50 76.1 442 -65 310 70.4 444 -65 350 68.9