********** Mauna Loa Solar Observatory ********** OBSERVING HOURS These are defined as the time between the first and the last useful coronal scans made with the MkIII K-coronameter. This instrument levies very stringent requirements on the condition of the sky so is the most sensitive to the weather. Unless otherwise stated, it may be assumed that the H alpha observations made with the prominence monitor will be available for the same hours as the coronal data, or perhaps even longer. The format of this file is undergoing evaluation and may not be final. YEAR 1992: Day of Begin End Year (UT) (UT) ====== ===== ===== 1 18.09 20.52 CME, pa 260, 20:29-20.52 (chu) 2 18.11 20.11 3 18.11 21.55 4 18.24 26.24 CME, pa 270, 19:00-21:00, CME pa 275, 00:40-02:42 (chu) 5 18.07 21.58 6 18.07 20.40 CME pa 265, 20:00-20:40 (chu) 7 18.06 20.40 8 18.05 22.00 9 18.05 21.56 CME ~pa 280 from 19:53 to ~20:25 UT. (chu) 10 18.11 20.53 11 18.17 21.31 12 18.03 21.13 13 ----- ----- 14 19.20 21.51 15 18.13 18.19 16 18.51 21.13 17 ----- ----- 18 18.13 22.01 19 18.27 21.11 20 19.23 21.41 21 18.21 21.33 22 17.59 22.17 23 18.08 21.14 24 18.11 20.32 25 ----- ----- 26 18.15 21.29 27 18.17 20.30 28 18.03 20.11 29 18.19 20.56 30 18.10 20.20 31 ----- ----- 32 ----- ----- 33 ----- ----- 34 17.52 21.47 35 18.25 21.33 36 17.48 22.40 37 18.07 19.14 38 18.14 22.00 39 17.51 21.59 40 17.59 21.42 41 17.50 23.18 42 18.41 19.26 43 ----- ----- 44 ----- ----- 45 ----- ----- 46 ----- ----- 47 ----- ----- 48 18.03 22.02 49 17.49 21.59 50 18.12 20.52 51 17.47 21.21 52 17.53 22.01 53 17.50 21.48 54 17.55 21.47 55 17.52 21.22 56 18.04 21.41 57 ----- ----- 58 17.48 21.47 59 17.51 22.16 60 17.47 21.18 61 17.43 22.18 62 17.39 20.08 63 ----- ----- 64 17.35 20.00 65 18.07 21.12 66 17.40 20.22 67 17.48 21.47 68 17.39 21.43 69 17.57 21.26 70 17.46 21.35 71 17.42 22.04 72 17.38 21.48 73 17.46 21.39 74 17.37 21.24 75 17.34 19.00 76 17.35 20.00 77 ----- ----- 78 17.38 22.06 79 ----- ----- 80 00.20 00.46 81 ----- ----- 82 20.14 22.22 83 17.32 21.58 84 18.36 21.57 85 17.49 21.57 86 17.31 21.18 87 17.40 20.42 88 ----- ----- 89 17.33 21.18 90 ----- ----- 91 17.35 20.51 92 17.26 19.54 93 19.32 21.21 94 ----- ----- 95 17.28 21.56 96 ----- ----- 97 17.28 18.30 98 ----- ----- 99 ----- ----- 100 ----- ----- 101 ----- ----- 102 ----- ----- 103 ----- ----- 104 17.16 21.58 105 17.15 20.25 106 19.35 21.13 107 17.15 22.00 CME between 19_49 and 20_32 UT at approx pa 100-120. 108 18.19 20.31 109 ----- ----- 110 ----- ----- 111 ----- ----- 112 17.10 22.02 113 ----- ----- 114 ----- ----- 115 ----- ----- 116 17.24 20.36 117 17.15 19.25 118 17.18 21.18 119 ----- ----- 120 17.33 21.18 121 17.24 20.26 122 ----- ----- 123 17.05 21.13 124 17.09 21.44 125 17.06 21.58 126 17.10 22.01 127 17.13 21.39 128 17.23 21.55 129 17.12 21.57 130 17.15 21.43 131 17.10 21.39 132 ----- ----- 132 19.23 20.34 133 ----- ----- 134 17.08 21.52 135 ----- ----- 136 ----- ----- 137 ----- ----- 138 17.04 18.18 139 17.49 19.31 140 ----- ----- 141 18.48 19.24 142 17.13 21.42 143 17.06 19.26 144 17.07 21.46 145 17.01 20.41 146 17.11 20.15 147 17.09 21.09 148 17.03 20.16 149 17.14 21.49 150 17.36 20.32 151 19.01 21.02 152 17.38 21.01 153 18.57 20.07 154 17.21 21.42 155 17.06 21.48 156 17.03 21.48 157 17.37 19.13 158 17.05 20.36 159 17.06 21.40 160 17.21 21.43 161 17.12 21.59 162 17.17 21.24 163 17.07 21.17 164 ----- ----- 165 ----- ----- 166 17.19 18.46 167 16.58 20.15 168 17.05 19.56 169 17.09 18.59 170 17.10 21.06 171 17.05 19.05 172 17.06 19.48 173 17.07 19.50 174 17.09 21.00 175 ----- ----- 176 19.18 21.33 177 ----- ----- 178 ----- ----- 179 17.26 21.02 180 17.13 19.37 181 17.08 21.49 182 17.09 19.24 183 ----- ----- 184 ----- ----- 185 17.03 21.51 186 17.03 21.39 187 ----- ----- 188 17.59 22.41 189 17.13 21.59 190 17.04 22.07 191 ----- ----- 192 17.11 19235 193 17.10 20.00 194 17.00 20.24 195 17.03 21.02 196 17.06 21.57 197 17.09 20.45 198 18.07 22.04 199 17.37 21.50 200 ----- ----- 201 17.15 20.49 202 17.10 21.07 203 17.42 19.08 204 ----- ----- 205 ----- ----- 206 ----- ----- 207 17.03 21.41 208 ----- ----- 209 ----- ----- 210 19.59 20.03 211 17.08 20.28 212 ----- ----- 213 17.03 22.01 214 ----- ----- 215 17.01 18.27 216 ----- ----- 217 18.07 22.00 218 ----- ----- 219 17.15 20.29 220 ----- ----- 221 17.03 20.15 222 ----- ----- 223 17.21 20.41 224 ----- ----- 225 ----- ----- 226 ----- ----- 227 ----- ----- 228 ----- ----- 229 ----- ----- 230 18.01 21.58 231 ----- ----- 232 17.20 21.51 233 ----- ----- 234 19.22 21.02 235 ----- ----- 236 18.19 21.12 237 19.25 21.12 238 ----- ----- 239 ----- ----- 240 17.57 21.51 241 ----- ----- 242 19.00 19.29 243 ----- ----- 244 17.54 21.33 245 ----- ----- 246 18.07 19.12 247 ----- ----- 248 18.08 18.48 249 ----- ----- 250 ----- ----- 251 17.14 20.20 252 19.51 21.33 253 17.22 21.07 254 ----- ----- 255 ----- ----- 256 ----- ----- 257 ----- ----- 258 ----- ----- 259 ----- ----- 260 ----- ----- 261 ----- ----- 262 17.29 22.00 263 17.52 21.25 264 18.14 21.07 265 19.09 19.51 266 17.20 21.39 267 ----- ----- 268 17.23 20.35 269 17.24 22.03 270 ----- ----- 271 ----- ----- 272 19.02 21.23 273 ----- ----- 274 17.24 21.55 275 ----- ----- 276 ----- ----- 277 18.03 20.33 278 17.23 20.57 279 ----- ----- 280 17.59 21.48 281 ----- ----- 282 ----- ----- 283 ----- ----- 284 ----- ----- 285 ----- ----- 286 ----- ----- 287 ----- ----- 288 ----- ----- 289 ----- ----- 290 ----- ----- 291 ----- ----- 292 ----- ----- 293 17.33 20.31 294 17.31 22.02 295 17.20 20.06 296 18.23 21.57 297 17.21 21.17 298 17.20 20.20 299 17.22 22.08 300 17.46 21.33 301 17.32 18.39 302 17.43 19.13 303 ----- ----- 304 ----- ----- 305 ----- ----- 306 19.36 20.50 307 18.58 20.29 309 23.03 00.49 310 17.43 21.28 311 18.49 22.22 312 ----- ----- 313 17.38 22.05 314 17.44 22.01 315 19.06 21.33 316 ----- ----- 317 18.19 22.05 318 17.35 22.02 319 ----- ----- 320 ----- ----- 321 ----- ----- 322 ----- ----- 323 ----- ----- 324 ----- ----- 325 ----- ----- 326 ----- ----- 327 19.23 20.26 328 21.02 22.01 329 17.41 21.55 330 18.17 21.51 331 17.36 22.00 332 17.36 19.25 333 ----- ----- 334 ----- ----- 335 17.41 20.34 336 ----- ----- 337 ----- ----- 338 20.35 22.01 339 ----- ----- 340 ----- ----- 341 18.14 22.00 342 17.59 21.09 343 17.51 21.26 344 18.48 20.07 345 17.51 22.01 346 ----- ----- 347 17.55 21.54 348 ----- ----- 349 18.06 21.59 350 ----- ----- 351 ----- ----- 352 18.48 20.30 353 20.26 22.02 354 18.28 19.01 355 ----- ----- 356 17.58 21.22 357 ----- ----- 358 18.10 20.47 359 19.30 20.55 360 ----- ----- 361 ----- ----- 362 ----- ----- 363 18.00 19.57 364 18.00 20.20 365 17.53 22.02 366 ----- -----