**********************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. Note that the MLSO oberving day begins about 17:00 UT and can end as late as 03:30 UT the "next" day. Typical observing times are 17:30 UT to 23:00 UT. The format of this file is undergoing evaluation and may not be final FOR YEAR 1999: Day of Begin End Year (UT) (UT) 1 ----- ----- 2 17.37 23.23 3 17.37 22.06 4 21.08 21.44 5 17.28 22.54 5 17.28 22.54 6 17.35 19.22 7 19.52 21.14 8 ----- ----- 9 ----- ----- 10 ----- ----- 11 17.39 22.08 12 18.05 22.07 13 17.47 23.01 14 17.47 23.07 15 17.35 18.30 16 17.58 22.23 17 17.58 23.38 18 ----- ----- 19 17.28 22.09 20 17.40 23.19 21 18.32 23.13 22 ----- ----- 23 ----- ----- 24 17.49 22.39 25 17.45 22.07 26 ----- ----- 27 17.59 21.46 28 ----- ----- 29 ----- ----- 30 21.32 22.53 31 ----- ----- 32 17.46 18.21 33 ----- ----- 34 ----- ----- 35 17.50 23.04 36 17.26 23.20 36 17.26 23.20 37 17.57 23.11 38 17.32 23.18 39 ----- ----- 40 17.23 21.51 41 17.42 23.03 42 17.50 21.02 43 17.21 21.25 44 17.49 23.36 45 20.01 23.32 46 ----- ----- 47 17.23 22.05 48 17.50 23.10 49 17.49 21.39 50 17.17 20.53 51 ----- ----- 52 ----- ----- 53 18.36 18.39 54 17.18 22.05 55 17.58 23.31 56 17.59 22.02 57 17.18 22.06 58 17.36 23.10 59 17.54 22.49 60 17.12 17.48 61 17.39 22.03 62 17.55 23.13 63 17.38 21.48 64 17.22 21.53 65 17.40 22.39 66 17.48 23.15 67 17.10 22.08 68 17.05 22.04 69 ----- ----- 69 ----- ----- 70 17.28 22.08 71 ----- ----- 72 ----- ----- 73 ----- ----- 74 ----- ----- 75 17.10 20.21 76 ----- ----- 77 17.04 20.40 78 17.23 21.13 79 ----- ----- 80 ----- ----- 81 21.48 22.28 82 17.26 22.36 83 17.29 22.37 84 17.21 21.08 85 ----- ----- 86 ----- ----- 87 ----- ----- 88 19.08 20.36 89 ----- ----- 90 ----- ----- 91 17.48 22.11 92 16.48 18.22 93 ----- ----- 94 ----- ----- 95 19.54 22.12 96 18.44 21.35 97 17.00 22.00 98 19.21 19.43 99 17.55 20.27 100 ----- ----- 101 ----- ----- 102 16.47 20.08 103 16.44 20.16 104 17.13 21.02 105 16.54 19.27 106 ----- ----- 107 16.58 22.27 108 16.58 22.28 109 16.43 22.09 110 16.38 21.44 111 16.55 22.02 112 17.13 20.19 113 16.40 22.38 114 02.37 23.05 115 02.26 18.41 116 16.43 22.22 117 00.28 4991.39 118 16.51 23.29 119 16.59 23.03 120 16.43 21.33 121 16.59 22.33 122 16.59 22.12 123 18.00 21.44 124 17.45 22.10 125 ----- ----- 126 16.51 22.18 127 16.28 22.06 128 16.59 20.26 129 17.04 22.31 130 16.30 22.09 131 16.37 22.01 132 16.52 22.26 133 20.40 22.44 134 16.26 21.55 135 16.50 22.32 136 17.12 20.31 137 ----- ----- 138 16.26 20.04 139 17.09 22.06 140 16.56 22.08 142 16.49 19.08 144 16.38 22.12 145 16.23 22.10 146 16.55 22.15 147 16.58 22.03 148 16.27 22.06 149 ----- ----- 150 20.35 22.17 151 ----- ----- 152 16.30 22.08 153 16.42 22.17 154 16.57 21.05 155 16.27 21.59 156 16.44 21.12 157 16.44 22.11 158 16.28 21.22 159 17.34 22.05 160 16.53 21.58 161 16.32 22.05 162 18.58 20.03 163 16.58 22.16 164 16.52 21.49 165 16.22 22.03 166 17.13 22.07 167 17.00 22.20 168 16.53 22.19 169 ----- ----- 170 16.58 22.18 171 16.55 21.52 172 19.08 20.43 173 16.30 22.10 174 17.20 22.17 175 00.00 23.56 176 16.31 22.05 177 17.02 22.22 178 16.57 22.24 179 16.31 21.28 180 ----- ----- 181 17.22 22.20 182 16.56 20.31 183 16.36 22.11 184 16.54 22.25 185 16.54 19.27 186 19.16 20.50 187 18.21 21.58 188 ----- ----- 189 ----- ----- 190 16.41 22.05 191 16.57 22.25 192 ----- ----- 192 16.58 20.26 193 00.35 22.11 194 16.25 22.10 195 ----- ----- 196 16.37 22.04 197 ----- ----- 198 16.59 22.28 199 16.47 22.36 200 16.40 22.05 201 16.31 21.56 202 20.21 22.02 203 16.39 22.05 204 16.28 22.07 205 17.18 22.16 206 16.58 22.20 207 16.32 22.08 208 16.32 22.46 209 16.30 21.00 210 16.51 22.23 211 16.30 21.34 212 16.59 22.13 213 17.00 22.05 214 17.25 21.02 215 16.32 22.08 216 ----- ----- 217 16.57 22.04 218 17.00 22.07 219 17.05 22.11 220 16.56 22.17 221 16.34 22.14 222 ----- ----- 223 16.57 21.25 224 16.55 22.03 225 16.46 21.14 226 16.53 21.59 227 ----- ----- 228 16.34 22.06 229 16.38 22.20 230 17.10 22.30 231 16.56 21.58 232 16.37 20.36 233 17.05 22.10 234 16.54 22.02 235 16.57 22.05 236 16.36 22.03 237 18.11 22.54 238 16.41 22.30 239 16.44 22.11 240 17.03 22.13 241 17.06 22.16 242 16.38 22.13 243 ----- ----- 243 ----- ----- 244 ----- ----- 245 16.59 21.42 245 16.59 21.42 246 16.49 20.17 247 16.41 20.40 248 ----- ----- 249 ----- ----- 250 16.47 22.14 251 16.51 22.02 252 16.57 22.25 253 16.47 22.04 254 16.57 22.30 255 16.43 23.05 256 17.01 21.45 257 16.41 22.05 258 17.16 22.14 259 16.56 22.15 259 16.56 22.15 260 16.43 22.02 261 06.58 22.01 262 17.02 22.06 263 16.42 22.05 264 16.48 21.23 265 17.00 22.04 266 17.02 22.35 267 16.46 22.03 268 17.03 22.00 269 17.00 20.47 270 16.43 21.56 271 16.42 18.16 272 19.51 21.43 273 16.53 21.00 279 ----- ----- 280 ----- ----- 281 ----- ----- 282 ----- ----- 283 ----- ----- 284 ----- ----- 285 ----- ----- 286 ----- ----- 287 ----- ----- 288 ----- ----- 289 ----- ----- 290 ----- -----