Stratocumulus Amount-When-Present (%) June, July, August (1954 - 1997) Day, Ship Observations Only Global Average: 71.5 Zonal Averages 16 zones Lat.N Average 85 83.1 75 80.5 65 76.7 55 80.6 45 80.6 35 71.8 25 67.7 15 66.6 5 67.9 -5 65.9 -15 70.0 -25 68.3 -35 71.7 -45 75.6 -55 78.4 -65 73.5 Grid Box Averages 372 filled boxes Box # Lat.N Lon.E Average 1 85 60 80.3 2 85 180 89.0 3 85 300 75.8 4 75 20 83.6 5 75 60 83.6 6 75 100 79.5 7 75 140 84.6 8 75 180 85.4 9 75 220 76.6 10 75 260 63.9 11 75 300 69.9 12 75 340 83.9 13 65 10 77.8 14 65 30 78.1 15 65 50 79.4 16 65 70 80.2 20 65 150 81.6 21 65 170 84.5 22 65 190 83.0 23 65 210 77.2 24 65 230 60.7 25 65 250 66.7 26 65 270 63.4 27 65 290 62.8 28 65 310 77.5 29 65 330 78.8 30 65 350 81.1 31 55 10 71.9 32 55 30 69.5 37 55 130 79.3 38 55 150 82.4 39 55 170 86.2 40 55 190 86.5 41 55 210 83.7 42 55 230 82.0 44 55 270 68.7 45 55 290 61.9 46 55 310 79.6 47 55 330 81.3 48 55 350 72.5 49 45 5 54.4 50 45 15 48.8 51 45 25 65.0 52 45 35 66.9 53 45 45 70.2 54 45 55 69.1 61 45 125 77.0 62 45 135 81.3 63 45 145 83.2 64 45 155 85.2 65 45 165 87.5 66 45 175 87.6 67 45 185 86.7 68 45 195 86.3 69 45 205 84.7 70 45 215 83.0 71 45 225 81.6 72 45 235 77.7 77 45 285 68.3 78 45 295 70.9 79 45 305 72.6 80 45 315 76.2 81 45 325 75.8 82 45 335 76.9 83 45 345 74.2 84 45 355 70.8 85 35 5 56.8 86 35 15 53.3 87 35 25 50.2 88 35 35 51.4 89 35 45 72.2 90 35 55 60.3 96 35 115 64.8 97 35 125 68.2 98 35 135 67.9 99 35 145 73.8 100 35 155 75.7 101 35 165 73.2 102 35 175 72.9 103 35 185 72.2 104 35 195 72.2 105 35 205 72.6 106 35 215 74.9 107 35 225 78.4 108 35 235 82.3 109 35 245 77.8 112 35 275 56.9 113 35 285 62.5 114 35 295 65.5 115 35 305 63.5 116 35 315 61.3 117 35 325 62.5 118 35 335 67.9 119 35 345 73.4 120 35 355 61.2 124 25 35 48.6 125 25 45 65.3 126 25 55 61.8 127 25 65 71.8 128 25 75 69.6 129 25 85 65.8 131 25 105 57.6 132 25 115 62.6 133 25 125 63.1 134 25 135 64.6 135 25 145 63.4 136 25 155 61.2 137 25 165 60.2 138 25 175 60.3 139 25 185 58.7 140 25 195 56.5 141 25 205 58.9 142 25 215 69.7 143 25 225 79.1 144 25 235 85.3 145 25 245 73.9 146 25 255 55.1 147 25 265 55.3 148 25 275 54.4 149 25 285 56.4 150 25 295 57.1 151 25 305 55.0 152 25 315 55.9 153 25 325 62.0 154 25 335 70.8 155 25 345 71.5 160 15 35 56.1 161 15 45 59.5 162 15 55 66.2 163 15 65 70.2 164 15 75 69.3 165 15 85 63.8 166 15 95 66.5 167 15 105 56.3 168 15 115 65.1 169 15 125 66.9 170 15 135 69.5 171 15 145 67.8 172 15 155 63.2 173 15 165 58.2 174 15 175 59.7 175 15 185 60.7 176 15 195 59.5 177 15 205 60.3 178 15 215 68.7 179 15 225 74.7 180 15 235 77.2 181 15 245 70.7 182 15 255 60.6 183 15 265 61.9 184 15 275 59.7 185 15 285 58.2 186 15 295 55.4 187 15 305 59.7 188 15 315 61.9 189 15 325 71.4 190 15 335 73.1 191 15 345 70.3 193 5 5 73.8 197 5 45 56.2 198 5 55 57.1 199 5 65 60.6 200 5 75 63.5 201 5 85 60.3 202 5 95 63.7 203 5 105 62.9 204 5 115 64.9 205 5 125 67.3 206 5 135 67.1 207 5 145 70.6 208 5 155 69.6 209 5 165 62.8 210 5 175 65.7 211 5 185 65.2 212 5 195 64.3 213 5 205 63.3 214 5 215 68.1 215 5 225 69.4 216 5 235 70.8 217 5 245 72.0 218 5 255 72.8 219 5 265 74.6 220 5 275 72.9 221 5 285 72.6 223 5 305 62.4 224 5 315 61.8 225 5 325 65.0 226 5 335 69.3 227 5 345 74.4 228 5 355 74.1 229 -5 5 78.2 230 -5 15 82.9 232 -5 35 61.1 233 -5 45 58.6 234 -5 55 58.9 235 -5 65 62.1 236 -5 75 63.2 237 -5 85 64.3 238 -5 95 66.0 239 -5 105 61.4 240 -5 115 52.5 241 -5 125 55.8 242 -5 135 63.9 243 -5 145 62.1 244 -5 155 70.3 245 -5 165 65.5 246 -5 175 60.5 247 -5 185 52.8 248 -5 195 57.4 249 -5 205 55.7 250 -5 215 56.3 251 -5 225 56.2 252 -5 235 56.3 253 -5 245 58.7 254 -5 255 62.6 255 -5 265 71.3 256 -5 275 84.5 257 -5 285 88.4 260 -5 315 51.0 261 -5 325 59.1 262 -5 335 58.0 263 -5 345 62.8 264 -5 355 74.4 265 -15 5 84.9 266 -15 15 82.0 268 -15 35 55.9 269 -15 45 55.5 270 -15 55 61.6 271 -15 65 62.4 272 -15 75 63.8 273 -15 85 67.7 274 -15 95 68.7 275 -15 105 65.4 276 -15 115 56.2 277 -15 125 44.3 278 -15 135 57.5 279 -15 145 59.5 280 -15 155 66.5 281 -15 165 67.6 282 -15 175 64.4 283 -15 185 64.4 284 -15 195 65.8 285 -15 205 61.9 286 -15 215 59.1 287 -15 225 61.2 288 -15 235 58.5 289 -15 245 59.2 290 -15 255 67.4 291 -15 265 72.9 292 -15 275 85.2 293 -15 285 88.7 297 -15 325 57.0 298 -15 335 60.2 299 -15 345 66.5 300 -15 355 81.1 301 -25 5 77.6 302 -25 15 72.0 304 -25 35 60.2 305 -25 45 60.8 306 -25 55 62.0 307 -25 65 65.9 308 -25 75 67.9 309 -25 85 71.4 310 -25 95 70.3 311 -25 105 67.5 312 -25 115 60.6 315 -25 145 55.2 316 -25 155 59.7 317 -25 165 63.4 318 -25 175 63.6 319 -25 185 66.3 320 -25 195 66.1 321 -25 205 64.1 322 -25 215 64.5 323 -25 225 62.5 324 -25 235 63.3 325 -25 245 67.4 326 -25 255 65.8 327 -25 265 73.5 328 -25 275 76.2 329 -25 285 81.6 332 -25 315 60.9 333 -25 325 61.9 334 -25 335 64.5 335 -25 345 66.6 336 -25 355 73.1 337 -35 5 74.1 338 -35 15 66.8 339 -35 25 60.1 340 -35 35 63.7 341 -35 45 68.8 342 -35 55 69.7 343 -35 65 71.8 344 -35 75 72.2 345 -35 85 75.3 346 -35 95 73.6 347 -35 105 72.6 348 -35 115 67.9 349 -35 125 66.7 350 -35 135 68.1 351 -35 145 65.5 352 -35 155 60.5 353 -35 165 66.3 354 -35 175 64.3 355 -35 185 67.7 356 -35 195 68.9 357 -35 205 70.6 358 -35 215 73.1 359 -35 225 71.4 360 -35 235 71.3 361 -35 245 79.3 362 -35 255 79.0 363 -35 265 77.1 364 -35 275 80.1 365 -35 285 74.7 366 -35 295 68.8 367 -35 305 69.5 368 -35 315 71.4 369 -35 325 72.7 370 -35 335 73.2 371 -35 345 72.1 372 -35 355 72.4 374 -45 15 77.1 375 -45 25 72.3 376 -45 35 77.9 377 -45 45 77.7 378 -45 55 74.5 379 -45 65 79.8 380 -45 75 76.6 381 -45 85 81.6 383 -45 105 70.8 384 -45 115 72.6 385 -45 125 74.5 386 -45 135 69.7 387 -45 145 62.9 388 -45 155 70.1 389 -45 165 72.2 390 -45 175 68.4 391 -45 185 76.9 392 -45 195 75.8 393 -45 205 74.1 394 -45 215 74.5 395 -45 225 75.6 396 -45 235 80.6 397 -45 245 83.0 398 -45 255 78.9 399 -45 265 83.3 400 -45 275 80.3 401 -45 285 81.4 402 -45 295 69.7 403 -45 305 72.5 404 -45 315 75.3 405 -45 325 76.7 406 -45 335 77.6 407 -45 345 76.4 408 -45 355 71.4 409 -55 10 84.7 411 -55 50 84.6 412 -55 70 79.7 415 -55 130 71.4 416 -55 150 73.9 417 -55 170 80.5 419 -55 210 81.7 420 -55 230 80.4 421 -55 250 80.7 422 -55 270 81.4 423 -55 290 75.6 424 -55 310 72.5 425 -55 330 76.3 427 -65 10 77.7 429 -65 50 73.5 442 -65 310 69.8