AVN MOS mean 00Z temperature errors for selected sites for 2001 +/- indicates a 95% confidence interval calculated around the mean sd = standard deviation, abserr = absolute error 12 hr 24 hr 36 hr 48 hr 60 hr 72 hr KATL mean bias -0.465 +/- 0.328 -0.620 +/- 0.348 -0.861 +/- 0.378 -0.876 +/- 0.398 -1.504 +/- 0.432 -1.196 +/- 0.466 KATL sd bias 3.181 3.384 3.668 3.872 4.188 4.529 KATL mean abserr 2.377 +/- 0.223 2.592 +/- 0.232 2.856 +/- 0.253 2.986 +/- 0.269 3.449 +/- 0.290 3.565 +/- 0.312 KATL sd abserr 2.162 2.258 2.453 2.612 2.807 3.034 KBOS mean bias 0.055 +/- 0.337 0.281 +/- 0.347 -0.028 +/- 0.365 -0.118 +/- 0.396 -0.427 +/- 0.436 0.050 +/- 0.466 KBOS sd bias 3.265 3.368 3.539 3.849 4.228 4.531 KBOS mean abserr 2.471 +/- 0.220 2.567 +/- 0.226 2.687 +/- 0.237 2.923 +/- 0.257 3.213 +/- 0.286 3.493 +/- 0.296 KBOS sd abserr 2.130 2.194 2.300 2.503 2.776 2.881 KCLE mean bias -0.061 +/- 0.296 -0.283 +/- 0.337 -0.577 +/- 0.360 -0.714 +/- 0.405 -0.890 +/- 0.441 -0.437 +/- 0.475 KCLE sd bias 2.871 3.280 3.491 3.940 4.278 4.621 KCLE mean abserr 2.188 +/- 0.191 2.481 +/- 0.222 2.787 +/- 0.224 3.038 +/- 0.268 3.287 +/- 0.296 3.481 +/- 0.315 KCLE sd abserr 1.856 2.161 2.176 2.604 2.874 3.065 KCVG mean bias 0.000 +/- 0.319 -0.080 +/- 0.324 -0.514 +/- 0.359 -0.253 +/- 0.390 -0.760 +/- 0.419 -0.692 +/- 0.434 KCVG sd bias 3.097 3.151 3.487 3.801 4.071 4.228 KCVG mean abserr 2.315 +/- 0.212 2.321 +/- 0.219 2.680 +/- 0.236 2.857 +/- 0.258 3.152 +/- 0.276 3.214 +/- 0.291 KCVG sd abserr 2.053 2.129 2.286 2.515 2.682 2.828 KDCA mean bias 0.303 +/- 0.305 0.586 +/- 0.323 0.497 +/- 0.336 0.439 +/- 0.368 0.425 +/- 0.404 0.384 +/- 0.439 KDCA sd bias 2.948 3.133 3.250 3.569 3.908 4.265 KDCA mean abserr 2.164 +/- 0.209 2.359 +/- 0.220 2.386 +/- 0.233 2.655 +/- 0.249 2.936 +/- 0.270 3.080 +/- 0.306 KDCA sd abserr 2.022 2.140 2.259 2.421 2.609 2.970 KDEN mean bias -1.157 +/- 0.570 -0.981 +/- 0.581 -1.381 +/- 0.642 -1.712 +/- 0.713 -2.022 +/- 0.773 -1.926 +/- 0.884 KDEN sd bias 5.532 5.652 6.235 6.943 7.504 8.603 KDEN mean abserr 4.467 +/- 0.356 4.536 +/- 0.360 5.072 +/- 0.399 5.734 +/- 0.438 6.304 +/- 0.467 6.876 +/- 0.566 KDEN sd abserr 3.455 3.504 3.873 4.264 4.534 5.507 KDFW mean bias 1.086 +/- 0.385 1.366 +/- 0.402 1.053 +/- 0.465 0.806 +/- 0.502 0.382 +/- 0.524 0.928 +/- 0.571 KDFW sd bias 3.721 3.901 4.498 4.866 5.065 5.537 KDFW mean abserr 2.903 +/- 0.265 3.066 +/- 0.285 3.365 +/- 0.327 3.676 +/- 0.339 3.741 +/- 0.355 4.230 +/- 0.380 KDFW sd abserr 2.565 2.767 3.160 3.283 3.430 3.685 KGGW mean bias -0.695 +/- 0.427 -1.570 +/- 0.496 -2.144 +/- 0.513 -1.006 +/- 0.547 -1.457 +/- 0.599 -0.799 +/- 0.582 KGGW sd bias 4.139 4.819 4.975 5.320 5.805 5.656 KGGW mean abserr 3.188 +/- 0.281 3.967 +/- 0.324 4.360 +/- 0.331 4.163 +/- 0.356 4.737 +/- 0.377 4.446 +/- 0.368 KGGW sd abserr 2.724 3.149 3.209 3.456 3.651 3.579 KIAH mean bias 0.619 +/- 0.352 0.964 +/- 0.365 0.536 +/- 0.400 0.519 +/- 0.421 0.315 +/- 0.439 0.668 +/- 0.459 KIAH sd bias 3.418 3.552 3.878 4.098 4.259 4.467 KIAH mean abserr 2.652 +/- 0.231 2.695 +/- 0.257 2.890 +/- 0.272 3.157 +/- 0.273 3.188 +/- 0.292 3.365 +/- 0.309 KIAH sd abserr 2.239 2.504 2.638 2.660 2.837 3.008 KJFK mean bias 0.055 +/- 0.305 -0.038 +/- 0.336 -0.138 +/- 0.348 -0.102 +/- 0.375 -0.163 +/- 0.395 -0.319 +/- 0.404 KJFK sd bias 2.960 3.268 3.380 3.648 3.836 3.928 KJFK mean abserr 2.343 +/- 0.186 2.555 +/- 0.209 2.646 +/- 0.217 2.821 +/- 0.237 2.854 +/- 0.264 2.995 +/- 0.263 KJFK sd abserr 1.806 2.034 2.103 2.310 2.565 2.557 KLAS mean bias 0.294 +/- 0.272 0.171 +/- 0.304 -0.008 +/- 0.324 -1.080 +/- 0.374 -1.404 +/- 0.404 -0.766 +/- 0.409 KLAS sd bias 2.636 2.953 3.142 3.634 3.912 3.973 KLAS mean abserr 1.961 +/- 0.184 2.187 +/- 0.205 2.313 +/- 0.219 2.997 +/- 0.238 3.305 +/- 0.260 3.102 +/- 0.267 KLAS sd abserr 1.782 1.988 2.124 2.317 2.516 2.593 KLAX mean bias 0.901 +/- 0.262 0.953 +/- 0.274 1.157 +/- 0.317 1.780 +/- 0.327 1.594 +/- 0.338 1.621 +/- 0.337 KLAX sd bias 2.542 2.670 3.077 3.181 3.280 3.283 KLAX mean abserr 1.978 +/- 0.189 2.074 +/- 0.198 2.461 +/- 0.224 2.830 +/- 0.236 2.793 +/- 0.241 2.868 +/- 0.233 KLAX sd abserr 1.831 1.931 2.176 2.295 2.342 2.272 KMCI mean bias -0.078 +/- 0.386 -0.425 +/- 0.382 -0.750 +/- 0.447 -0.953 +/- 0.488 -1.606 +/- 0.541 -0.815 +/- 0.570 KMCI sd bias 3.736 3.706 4.330 4.740 5.234 5.533 KMCI mean abserr 2.806 +/- 0.254 2.834 +/- 0.249 3.539 +/- 0.268 3.738 +/- 0.315 4.339 +/- 0.344 4.362 +/- 0.360 KMCI sd abserr 2.463 2.421 2.598 3.061 3.332 3.493 KMEM mean bias -0.600 +/- 0.307 -0.644 +/- 0.334 -0.919 +/- 0.371 -0.959 +/- 0.420 -1.386 +/- 0.449 -1.221 +/- 0.509 KMEM sd bias 2.976 3.241 3.588 4.078 4.347 4.939 KMEM mean abserr 2.250 +/- 0.210 2.450 +/- 0.228 2.808 +/- 0.249 3.191 +/- 0.279 3.436 +/- 0.310 3.851 +/- 0.342 KMEM sd abserr 2.036 2.213 2.410 2.710 2.997 3.320 KMIA mean bias -0.022 +/- 0.224 0.096 +/- 0.224 0.116 +/- 0.240 0.157 +/- 0.249 -0.072 +/- 0.255 0.129 +/- 0.260 KMIA sd bias 2.168 2.180 2.329 2.417 2.474 2.532 KMIA mean abserr 1.584 +/- 0.152 1.617 +/- 0.150 1.729 +/- 0.161 1.826 +/- 0.163 1.928 +/- 0.160 1.871 +/- 0.176 KMIA sd abserr 1.477 1.462 1.563 1.587 1.549 1.709 KMSP mean bias -0.900 +/- 0.386 -0.799 +/- 0.423 -1.321 +/- 0.470 -1.198 +/- 0.503 -1.385 +/- 0.534 -1.344 +/- 0.624 KMSP sd bias 3.742 4.112 4.552 4.890 5.174 6.070 KMSP mean abserr 2.994 +/- 0.249 3.284 +/- 0.267 3.742 +/- 0.299 4.041 +/- 0.308 4.305 +/- 0.328 5.058 +/- 0.371 KMSP sd abserr 2.413 2.596 2.903 2.996 3.180 3.607 KOKC mean bias 0.249 +/- 0.385 0.247 +/- 0.431 -0.110 +/- 0.466 -0.835 +/- 0.532 -1.163 +/- 0.547 -0.360 +/- 0.566 KOKC sd bias 3.733 4.191 4.519 5.178 5.310 5.511 KOKC mean abserr 2.829 +/- 0.252 3.066 +/- 0.294 3.282 +/- 0.320 3.890 +/- 0.361 4.097 +/- 0.367 4.080 +/- 0.382 KOKC sd abserr 2.443 2.863 3.104 3.512 3.567 3.717 KORD mean bias -0.136 +/- 0.396 -0.479 +/- 0.407 -0.676 +/- 0.424 -0.322 +/- 0.470 -0.850 +/- 0.532 -0.471 +/- 0.584 KORD sd bias 3.840 3.955 4.111 4.573 5.156 5.681 KORD mean abserr 2.817 +/- 0.269 2.942 +/- 0.276 3.030 +/- 0.295 3.402 +/- 0.316 3.931 +/- 0.355 4.201 +/- 0.396 KORD sd abserr 2.609 2.682 2.855 3.067 3.438 3.847 KPHX mean bias -0.457 +/- 0.274 -0.824 +/- 0.300 -1.313 +/- 0.347 -1.477 +/- 0.357 -1.393 +/- 0.387 -1.364 +/- 0.412 KPHX sd bias 2.656 2.912 3.364 3.475 3.753 4.006 KPHX mean abserr 1.898 +/- 0.197 2.262 +/- 0.207 2.781 +/- 0.237 2.953 +/- 0.242 3.100 +/- 0.261 3.242 +/- 0.279 KPHX sd abserr 1.911 2.008 2.300 2.348 2.529 2.715 KSEA mean bias -0.120 +/- 0.324 -0.263 +/- 0.336 -0.465 +/- 0.366 -0.230 +/- 0.373 -0.139 +/- 0.377 -0.111 +/- 0.397 KSEA sd bias 3.136 3.257 3.537 3.620 3.641 3.845 KSEA mean abserr 2.387 +/- 0.210 2.501 +/- 0.217 2.727 +/- 0.238 2.740 +/- 0.245 2.813 +/- 0.239 2.931 +/- 0.256 KSEA sd abserr 2.033 2.099 2.296 2.373 2.311 2.486 KSFO mean bias 1.050 +/- 0.344 1.116 +/- 0.392 1.307 +/- 0.425 1.702 +/- 0.445 1.670 +/- 0.445 1.102 +/- 0.446 KSFO sd bias 3.336 3.812 4.116 4.326 4.318 4.335 KSFO mean abserr 2.673 +/- 0.232 2.961 +/- 0.272 3.258 +/- 0.292 3.537 +/- 0.310 3.532 +/- 0.308 3.377 +/- 0.301 KSFO sd abserr 2.252 2.642 2.831 3.012 2.990 2.927 KSLC mean bias -0.041 +/- 0.471 -0.346 +/- 0.500 -0.599 +/- 0.533 -1.014 +/- 0.557 -0.704 +/- 0.552 -0.173 +/- 0.555 KSLC sd bias 4.575 4.871 5.170 5.418 5.360 5.405 KSLC mean abserr 3.472 +/- 0.306 3.736 +/- 0.322 4.124 +/- 0.326 4.354 +/- 0.346 4.296 +/- 0.337 4.162 +/- 0.354 KSLC sd abserr 2.973 3.139 3.168 3.372 3.275 3.446