--------------------------- Seeing Statistics at ESO Sites --------------------------- Column1=month index since January 1983 Column2=monthly average seeing at Paranal (arcsec at 0.5mu, zenith) Column3=monthly average seeing at LaSilla (arcsec at 0.5mu, zenith) 1 * * 2 * * 3 * * 4 * * 5 * * 6 * * 7 * * 8 * * 9 * * 10 * * 11 * * 12 * * 13 * * 14 * * 15 * * 16 * * 17 * * 18 * * 19 * * 20 * * 21 * * 22 * * 23 * * 24 * * 25 * * 26 * * 27 * * 28 * * 29 * * 30 * * 31 * * 32 * * 33 * * 34 * * 35 * * 36 * * 37 * * 38 * * 39 * * 40 * * 41 * * 42 * * 43 * * 44 * * 45 * * 46 * * 47 * * 48 * * 49 * * 50 * * 51 * * 52 0.770 * 53 0.720 * 54 0.654 * 55 0.687 * 56 0.795 * 57 0.872 * 58 * * 59 0.679 * 60 0.687 * 61 0.695 * 62 0.736 * 63 0.728 * 64 0.728 * 65 0.654 * 66 0.654 * 67 0.679 * 68 0.753 * 69 0.745 * 70 0.761 0.821 71 0.720 0.856 72 0.646 0.865 73 0.654 0.874 74 0.711 0.760 75 0.654 0.751 76 0.646 0.700 77 0.638 0.691 78 0.679 0.717 79 0.728 0.786 80 0.646 0.743 81 0.710 0.898 82 0.694 0.796 83 0.684 0.780 84 0.636 0.590 85 0.690 0.760 86 0.690 0.900 87 0.700 0.705 88 0.731 0.678 89 0.650 0.756 90 0.642 0.836 91 0.660 0.810 92 0.565 0.867 93 0.649 0.908 94 0.625 0.855 95 0.633 0.934 96 0.648 0.785 97 * 0.910 98 0.682 0.918 99 0.686 0.928 100 0.635 * 101 0.596 * 102 0.642 * 103 0.763 * 104 * * 105 * 0.903 106 * 1.000 107 * 0.865 108 * 0.847 109 * 0.836 110 * 0.893 111 * 0.898 112 * 1.023 113 * 0.974 114 * * 115 * * 116 * * 117 * * 118 * * 119 * * 120 0.695 * 121 0.660 * 122 0.622 * 123 0.593 * 124 0.624 * 125 0.660 * 126 0.690 1.280 127 * 1.120 128 * 1.548 129 * 1.422 130 * 1.114 131 * 0.987 132 * 0.797 133 * 0.699 134 * 0.720 135 * 0.814 136 0.593 0.784 137 0.575 0.838 138 0.630 0.896 139 0.779 1.073 140 0.779 1.013 141 * 0.858 142 0.544 0.911 143 0.688 0.915 144 0.647 0.843 145 * 0.838 146 * * 147 * 1.000 148 * 0.828 149 * 0.837 150 * 0.984 151 * 1.042 152 * 1.107 153 * 1.028 154 0.675 0.812 155 0.741 0.867 156 0.693 0.854 157 0.680 0.827 158 0.653 0.810 159 0.873 0.810 160 0.711 0.789 161 0.650 0.929 162 0.748 1.145 163 0.772 0.867 164 0.815 1.100 165 0.723 0.850 166 0.712 0.760 167 0.802 0.663 168 0.704 0.774 169 * 0.740 170 * 0.721 171 0.790 0.824 172 0.730 0.831 173 0.862 0.933 174 * 0.925 175 0.697 0.974 176 0.666 0.980 177 0.775 1.192 178 0.703 1.002 179 0.757 0.850 180 0.690 0.909 181 0.757 0.765 182 0.631 * 183 0.665 0.858 184 * 0.964 185 0.728 0.889 186 0.806 1.085 187 0.875 1.048 188 1.003 0.997 189 0.897 1.140 190 1.053 * 191 0.937 * 192 1.064 * 193 0.970 * 194 0.858 * 195 0.800 0.940 196 0.759 0.866 197 0.866 0.862 198 0.941 0.864 199 0.965 1.211 200 0.872 * 201 0.916 1.058 202 0.984 1.262 203 0.916 0.952 204 0.938 0.929 205 0.918 0.839 206 0.863 0.842 207 0.808 0.855 208 0.902 0.977 209 0.898 1.116 210 1.045 1.188 211 0.888 0.976 212 0.910 0.980 213 0.980 1.031 214 0.719 0.979 215 0.712 0.901 216 0.779 0.892 217 0.849 0.778 218 0.855 0.854 219 0.783 0.848 220 0.777 1.055 221 0.913 1.036 222 0.962 1.046 223 0.818 1.042 224 0.953 1.131 225 0.904 1.344 226 0.930 1.015 227 0.938 0.891 228 0.891 0.876 229 0.998 0.889 230 0.972 0.800 231 0.952 0.850 232 1.020 1.146 233 1.124 1.197 234 0.992 1.016 235 1.150 1.020 236 1.060 1.210 237 0.959 1.116 238 1.034 1.061 239 0.881 0.804 240 1.019 1.007 241 1.104 0.890 242 1.019 0.903 243 0.803 0.931 244 0.827 0.806 245 0.801 0.930 246 0.798 1.040 247 0.781 1.127 248 0.929 0.987 249 0.990 0.979 250 0.899 0.778 251 0.844 0.950 252 0.770 0.810 253 0.781 0.812 254 0.913 0.824 255 0.936 0.795 256 0.851 1.090 257 0.947 0.872 258 0.891 0.848 259 1.070 1.000 260 0.987 1.190 261 0.951 0.992 262 0.918 1.030 263 0.833 0.885 264 0.861 0.889 265 1.009 1.097 266 0.886 0.933 267 0.925 1.186 268 0.843 1.290 269 0.859 1.290 270 0.922 1.002 271 1.084 1.231 272 1.155 1.060 273 1.189 1.052 274 0.994 0.921 275 1.030 0.719 276 1.010 0.801 277 0.972 0.828 278 1.062 0.831 279 0.964 0.840 280 0.983 0.923 281 1.110 0.844 282 1.042 1.000 283 1.040 1.020 284 1.061 1.105 285 1.140 1.104 286 0.890 1.111 287 0.934 0.926 288 1.035 0.937 289 1.009 0.928 290 1.048 0.869 291 0.900 0.969 292 0.937 1.023 293 1.180 1.269 294 1.132 1.252 295 0.950 1.018 296 1.140 1.237 297 1.098 1.313 298 1.087 1.172 299 1.270 1.001 300 1.189 1.112 301 1.020 0.978 302 1.134 0.948 303 0.946 0.902 304 1.017 0.955 305 1.046 1.078 306 1.139 1.172 307 1.013 1.288 308 1.015 1.119 309 1.171 1.172 310 1.094 1.201 311 1.120 1.004 312 1.026 1.020 313 1.098 1.004 314 1.021 1.046 315 1.030 * 316 0.938 * 317 0.997 * 318 0.959 * 319 1.000 * 320 1.044 * 321 1.031 * 322 1.129 * 323 1.167 0.934 324 0.979 0.795 325 0.952 0.883 326 1.012 1.069 327 0.998 0.983 328 0.965 * 329 1.300 * 330 1.220 * 331 1.202 * 332 0.917 * 333 1.153 * 334 1.072 * 335 1.168 * 336 1.128 * 337 0.963 * 338 1.090 * 339 1.240 * 340 1.141 * 341 0.999 * 342 1.230 * 343 1.188 * 344 1.137 * 345 1.087 * 346 1.080 * 347 1.110 * 348 1.102 * 349 1.061 * 350 1.066 * 351 1.080 * 352 1.102 * 353 1.004 * 354 1.059 * 355 1.099 * 356 1.130 * 357 1.118 * 358 0.987 * 359 1.011 * 360 0.930 * 361 1.102 * 362 1.089 * 363 * * 364 * * 365 * * 366 * * 367 * * 368 * *