% This file contains a station summary listing for a temperature % station in the Berkeley Earth database. This station is identified as: % % Berkeley ID#: 165576 % Primary Name: LAKE HOOD SEA PLANE BASE % Record Type: TAVG % Country: United States % State: AK % Latitude: 61.18077 +/- 0.00273 % Longitude: -149.96693 +/- 0.00057 % Elevation (m): 31.10 +/- 9.15 % # of Months: 240 % % Alternate Names: ANCHORAGE LAKE HOOD % ANCHORAGE LAKE HOOD AP % Missing Station ID - 500277 % % IDs: coop - 500277 % faa - LHD % ghcnd - USW00026491 % gsod - 702725-26491 % gsod - 702725-99999 % icao - PALH % ncdc - 30000863 % nws - LHD % usaf - 702725 % wban - 26491 % % Sources: US First Order Summary of the Day % US Cooperative Summary of the Day % Global Historical Climatology Network - Daily % Global Summary of the Day % US Cooperative Summary of the Month % Multi-network Metadata System % % Site Hash: 38d6b93df2cccedf8780cc87870c179f % Raw Data Hash: 7302e425cfaf83f8ae03f819cbba3662 % Adj Data Hash: af3b344ba0e69251b688d405c88219bb % % The data for this station is presented below in several columns and in % several forms. The temperature values are reported as "raw", % "adjusted", and "regional expectation". % % The "raw" values reflect the observations as originally ingested by % the Berkeley Earth system from one or more originating archive(s). % These "raw" values may reflect the merger of more than one temperature % time series if multiple archives reported values for this location. % Alongside the raw data we have also provided a flag indicating which % values failed initial quality control checks. A further column % dates at which the raw data may be subject to continuity "breaks" % due to documented station moves (denoted "1"), prolonged measurement % gaps (denoted "2"), documented time of observation changes (denoted "3") % and other empirically determined inhomogeneities (denoted "4"). % % In many cases, raw temperature data contains a number of artifacts, % caused by issues such as typographical errors, instrumentation changes, % station moves, and urban or agricultural development near the station. % The Berkeley Earth analysis process attempts to identify and estimate % the impact of various kinds of data quality problems by comparing each % time series to neighboring series. At the end of the analysis process, % the "adjusted" data is created as an estimate of what the weather at % this location might have looked like after removing apparent biases. % This "adjusted" data will generally to be free from quality control % issues and be regionally homogeneous. Some users may find this % "adjusted" data that attempts to remove apparent biases more % suitable for their needs, while other users may prefer to work % with raw values. % % Lastly, we have provided a "regional expectation" time series, based % on the Berkeley Earth expected temperatures in the neighborhood of the % station. This incorporates information from as many weather stations as % are available for the local region surrounding this location. Note % that the regional expectation may be a systematically a bit warmer or % colder than the weather stations by a few degrees due to differences % in mean elevation and other local characteristics. % % For each temperature time series, we have also included an "anomaly" % time series that removes both the seasonality and the long-term mean. % These anomalies may provide an easier way of seeing changes through % time. % % Reported temperatures are in Celsius and reflect monthly averages. As % these files are intended to be summaries for convenience, additional % information, including more detailed flagging and metadata, may be % available in our whole data set files. % % The Berkeley Earth analysis was run on 15-Nov-2013 19:55:48 % % Raw Data QC Continuity Adjusted Data Regional Expectation % Year, Month, Temperature, Anomaly, Failed, Breaks, Temperature, Anomaly, Temperature, Anomaly 1992 12 NaN NaN NaN NaN NaN NaN -16.613 -0.601 1993 1 NaN NaN NaN NaN NaN NaN -16.282 -0.058 1993 2 NaN NaN NaN NaN NaN NaN -9.373 3.341 1993 3 NaN NaN NaN NaN NaN NaN -6.756 2.735 1993 4 NaN NaN NaN NaN NaN NaN 1.304 3.821 1993 5 NaN NaN NaN NaN NaN NaN 7.232 2.906 1993 6 NaN NaN NaN NaN NaN NaN 11.117 1.430 1993 7 NaN NaN NaN NaN NaN NaN 14.107 2.294 1993 8 NaN NaN NaN NaN NaN NaN 11.286 1.097 1993 9 NaN NaN NaN NaN NaN NaN 5.411 0.140 1993 10 NaN NaN NaN NaN NaN NaN -0.675 2.494 1993 11 NaN NaN NaN NaN NaN NaN -9.051 1.540 1993 12 -2.179 8.972 1 0 NaN NaN -10.066 5.946 1994 1 -5.901 5.462 0 0 -5.659 5.704 -11.470 4.754 1994 2 -8.942 -1.089 0 0 -8.596 -0.742 -13.345 -0.631 1994 3 -4.357 0.273 0 0 -3.695 0.935 -9.427 0.064 1994 4 2.670 0.326 0 0 3.849 1.505 0.014 2.531 1994 5 7.948 -1.239 0 0 9.541 0.354 5.350 1.024 1994 6 12.133 -2.414 1 0 NaN NaN 10.773 1.086 1994 7 14.621 -2.052 0 0 16.241 -0.433 12.597 0.784 1994 8 14.504 -0.547 0 0 16.022 0.972 11.819 1.629 1994 9 9.076 -1.056 0 0 10.346 0.215 5.818 0.546 1994 10 0.785 -0.906 0 0 1.602 -0.090 -3.846 -0.676 1994 11 -8.926 -3.196 0 0 -8.527 -2.797 -13.826 -3.235 1994 12 -8.403 2.748 0 0 -8.171 2.981 -15.191 0.821 1995 1 -7.627 3.736 0 0 -7.385 3.979 -14.405 1.819 1995 2 -5.815 2.038 0 0 -5.469 2.385 -10.843 1.871 1995 3 -7.802 -3.172 0 0 -7.141 -2.511 -13.205 -3.714 1995 4 4.146 1.802 0 0 5.325 2.980 1.255 3.771 1995 5 9.133 -0.054 0 0 10.725 1.539 6.025 1.700 1995 6 11.110 -3.438 1 0 NaN NaN 10.391 0.704 1995 7 14.362 -2.312 0 0 15.981 -0.692 12.577 0.764 1995 8 13.711 -1.339 0 0 15.230 0.179 11.006 0.817 1995 9 12.094 1.962 1 0 NaN NaN 8.775 3.504 1995 10 2.101 0.410 1 0 NaN NaN -1.293 1.876 1995 11 -6.042 -0.312 0 0 -5.643 0.087 -10.945 -0.355 1995 12 -7.213 3.938 0 0 -6.981 4.171 -13.416 2.596 1996 1 -14.498 -3.135 0 0 -14.256 -2.893 -20.160 -3.936 1996 2 -9.179 -1.325 1 0 NaN NaN -13.927 -1.213 1996 3 -3.761 0.869 1 0 NaN NaN -6.607 2.884 1996 4 2.630 0.286 0 0 3.809 1.464 -0.737 1.780 1996 5 9.618 0.432 0 0 11.211 2.024 6.401 2.075 1996 6 13.444 -1.103 0 0 15.137 0.590 10.623 0.936 1996 7 14.596 -2.077 1 0 NaN NaN 12.454 0.641 1996 8 13.233 -1.817 0 0 14.751 -0.299 10.134 -0.056 1996 9 7.622 -2.510 0 0 8.893 -1.239 4.467 -0.804 1996 10 -3.991 -5.682 0 0 -3.175 -4.866 -7.876 -4.707 1996 11 -7.285 -1.555 0 0 -6.886 -1.156 -12.086 -1.495 1996 12 -10.932 0.220 0 0 -10.699 0.452 -16.730 -0.717 1997 1 -9.565 1.799 0 0 -9.322 2.041 -16.145 0.079 1997 2 -1.159 6.695 0 0 -0.812 7.042 -4.436 8.278 1997 3 -4.689 -0.059 0 0 -4.028 0.602 -9.973 -0.482 1997 4 3.205 0.860 1 0 NaN NaN -0.110 2.407 1997 5 9.419 0.233 0 0 11.012 1.826 6.276 1.950 1997 6 14.056 -0.492 0 0 15.748 1.201 11.644 1.958 1997 7 15.903 -0.770 0 0 17.523 0.849 14.091 2.278 1997 8 14.778 -0.272 0 0 16.296 1.246 11.716 1.527 1997 9 6.662 -3.470 1 0 NaN NaN 7.307 2.035 1997 10 -1.782 -3.473 0 0 -0.965 -2.657 -6.119 -2.950 1997 11 -2.358 3.372 0 0 -1.959 3.771 -6.657 3.934 1997 12 -7.620 3.531 0 0 -7.388 3.764 -15.039 0.973 1998 1 -6.463 4.900 1 0 NaN NaN -15.252 0.972 1998 2 -4.332 3.521 0 0 -3.985 3.868 -7.769 4.945 1998 3 -1.873 2.757 0 0 -1.211 3.419 -6.086 3.405 1998 4 4.352 2.007 0 4 4.759 2.415 0.244 2.760 1998 5 8.582 -0.604 0 0 9.404 0.217 3.886 -0.440 1998 6 13.163 -1.384 0 0 14.085 -0.463 9.458 -0.229 1998 7 14.798 -1.875 0 0 15.647 -1.027 11.676 -0.137 1998 8 12.711 -2.339 0 0 13.458 -1.592 8.931 -1.258 1998 9 9.902 -0.230 0 0 10.401 0.269 5.697 0.426 1998 10 2.534 0.843 0 0 2.579 0.888 -1.857 1.313 1998 11 -4.488 1.242 0 0 -4.861 0.869 -8.839 1.751 1998 12 -9.818 1.334 0 0 -10.356 0.795 -15.800 0.212 1999 1 -11.018 0.346 0 0 -11.547 -0.183 -17.797 -1.573 1999 2 -13.300 -5.447 0 0 -13.724 -5.871 -18.758 -6.044 1999 3 -4.248 0.382 0 0 -4.358 0.272 -9.343 0.148 1999 4 1.845 -0.499 0 0 2.252 -0.092 -1.686 0.830 1999 5 8.598 -0.588 0 0 9.420 0.233 4.262 -0.064 1999 6 13.867 -0.681 0 0 14.788 0.241 10.871 1.185 1999 7 15.673 -1.001 0 0 16.521 -0.153 12.336 0.523 1999 8 14.445 -0.605 0 0 15.192 0.142 10.637 0.448 1999 9 9.872 -0.260 0 0 10.371 0.239 6.162 0.891 1999 10 1.569 -0.122 0 0 1.615 -0.077 -3.664 -0.495 1999 11 -6.718 -0.988 0 0 -7.091 -1.361 -11.667 -1.076 1999 12 -9.326 1.825 0 0 -9.865 1.287 -17.239 -1.227 2000 1 -9.679 1.684 0 0 -10.208 1.155 -16.094 0.130 2000 2 -3.433 4.421 0 0 -3.857 3.996 -6.607 6.107 2000 3 -0.984 3.646 0 0 -1.094 3.536 -5.786 3.705 2000 4 3.533 1.189 0 0 3.941 1.596 -0.570 1.946 2000 5 8.873 -0.314 0 0 9.694 0.508 4.003 -0.323 2000 6 13.920 -0.627 0 0 14.841 0.294 10.512 0.825 2000 7 14.877 -1.796 0 0 15.726 -0.948 11.297 -0.516 2000 8 13.631 -1.420 0 0 14.378 -0.673 9.430 -0.759 2000 9 9.070 -1.062 0 0 9.569 -0.563 4.753 -0.519 2000 10 2.379 0.688 0 0 2.424 0.733 -2.976 0.194 2000 11 -0.982 4.748 0 0 -1.354 4.376 -6.109 4.482 2000 12 -3.687 7.464 0 0 -4.226 6.926 -9.639 6.373 2001 1 -2.147 9.216 0 0 -2.676 8.688 -7.936 8.288 2001 2 -4.784 3.069 0 0 -5.208 2.645 -8.763 3.951 2001 3 -1.540 3.090 0 0 -1.650 2.980 -6.570 2.921 2001 4 3.867 1.522 0 0 4.274 1.930 -0.788 1.729 2001 5 8.294 -0.893 0 0 9.115 -0.071 3.064 -1.262 2001 6 15.683 1.136 0 0 16.605 2.057 11.903 2.217 2001 7 15.081 -1.593 0 0 15.929 -0.745 12.069 0.256 2001 8 15.215 0.164 0 0 15.962 0.911 11.638 1.448 2001 9 10.118 -0.014 0 0 10.618 0.486 6.876 1.605 2001 10 -0.335 -2.027 0 0 -0.290 -1.982 -5.503 -2.333 2001 11 -6.893 -1.163 0 0 -7.266 -1.536 -11.455 -0.865 2001 12 -11.663 -0.511 0 1 -12.198 -1.046 -18.445 -2.433 2002 1 -4.506 6.857 0 0 -5.032 6.331 -10.108 6.116 2002 2 -6.089 1.764 0 0 -6.510 1.343 -9.500 3.214 2002 3 -5.761 -1.131 0 0 -5.868 -1.238 -9.919 -0.428 2002 4 -0.198 -2.543 0 0 0.213 -2.132 -4.137 -1.621 2002 5 10.106 0.919 0 0 10.931 1.744 5.787 1.461 2002 6 13.035 -1.512 0 0 13.960 -0.588 10.231 0.544 2002 7 16.332 -0.341 0 0 17.184 0.511 12.892 1.079 2002 8 14.642 -0.409 0 0 15.392 0.342 10.465 0.275 2002 9 10.537 0.405 0 0 11.040 0.908 6.458 1.187 2002 10 5.556 3.864 0 0 5.604 3.913 0.781 3.951 2002 11 1.815 7.545 0 0 1.446 7.176 -2.423 8.168 2002 12 -4.229 6.922 0 0 -4.764 6.387 -9.738 6.274 2003 1 -5.407 5.956 0 0 -5.933 5.431 -10.917 5.307 2003 2 -0.258 7.595 0 0 -0.679 7.175 -4.694 8.020 2003 3 -1.858 2.772 0 0 -1.965 2.665 -8.953 0.538 2003 4 4.406 2.062 0 0 4.817 2.473 -0.595 1.922 2003 5 10.296 1.110 0 0 11.122 1.935 4.918 0.592 2003 6 14.291 -0.256 0 0 15.216 0.669 10.512 0.825 2003 7 17.885 1.212 0 0 18.737 2.064 13.394 1.581 2003 8 15.143 0.093 0 0 15.894 0.844 10.941 0.752 2003 9 9.796 -0.336 0 0 10.299 0.167 5.424 0.153 2003 10 5.108 3.416 0 0 5.156 3.465 0.830 4.000 2003 11 -3.077 2.653 0 0 -3.446 2.284 -10.175 0.416 2003 12 -7.393 3.758 0 0 -7.928 3.223 -14.650 1.362 2004 1 -12.889 -1.526 0 0 -13.414 -2.051 -18.541 -2.317 2004 2 -3.257 4.597 0 0 -3.677 4.176 -6.906 5.808 2004 3 -3.907 0.723 0 0 -4.013 0.617 -9.318 0.173 2004 4 3.444 1.100 0 0 3.855 1.511 -0.075 2.442 2004 5 11.237 2.050 0 0 12.062 2.875 7.036 2.710 2004 6 15.481 0.934 0 0 16.406 1.859 12.182 2.496 2004 7 18.154 1.481 0 0 19.006 2.332 14.131 2.318 2004 8 17.384 2.333 0 0 18.134 3.084 13.628 3.438 2004 9 7.870 -2.262 0 0 8.373 -1.759 3.179 -2.092 2004 10 4.140 2.449 0 0 4.189 2.497 -0.858 2.311 2004 11 -0.900 4.830 0 0 -1.269 4.461 -6.728 3.863 2004 12 -5.394 5.757 0 0 -5.929 5.222 -11.676 4.336 2005 1 -7.151 4.213 0 4 -6.841 4.522 -13.354 2.870 2005 2 -6.091 1.762 0 0 -5.902 1.951 -10.683 2.031 2005 3 0.591 5.221 0 0 0.418 5.048 -5.251 4.240 2005 4 5.611 3.267 0 0 4.843 2.498 -0.191 2.325 2005 5 12.043 2.856 0 0 10.798 1.611 7.103 2.777 2005 6 15.833 1.286 0 0 14.473 -0.074 11.789 2.102 2005 7 17.944 1.271 0 0 16.669 -0.005 13.645 1.832 2005 8 15.878 0.828 0 0 14.719 -0.331 11.780 1.591 2005 9 11.944 1.813 0 0 11.070 0.938 6.924 1.653 2005 10 3.907 2.216 0 0 3.555 1.864 -1.847 1.322 2005 11 -7.537 -1.807 0 0 -7.408 -1.678 -13.754 -3.164 2005 12 -3.620 7.531 0 0 -3.300 7.852 -8.619 7.393 2006 1 -11.254 0.109 0 0 -10.945 0.418 -18.749 -2.525 2006 2 -4.722 3.131 0 0 -4.533 3.320 -9.704 3.010 2006 3 -3.943 0.687 0 0 -4.116 0.514 -10.330 -0.839 2006 4 3.037 0.693 0 0 2.269 -0.076 -2.278 0.238 2006 5 10.968 1.781 0 0 9.723 0.536 5.974 1.648 2006 6 14.444 -0.103 0 0 13.085 -1.463 9.805 0.119 2006 7 16.380 -0.294 0 0 15.104 -1.570 12.538 0.725 2006 8 14.265 -0.785 0 0 13.106 -1.944 9.430 -0.760 2006 9 11.093 0.961 0 0 10.218 0.087 6.868 1.597 2006 10 5.269 3.578 0 0 4.917 3.226 -0.528 2.641 2006 11 -10.241 -4.511 0 0 -10.112 -4.382 -15.016 -4.425 2006 12 -5.556 5.596 0 0 -5.235 5.916 -12.104 3.908 2007 1 -7.957 3.406 0 0 -7.648 3.715 -14.889 1.335 2007 2 -8.000 -0.147 0 0 -7.811 0.042 -12.496 0.218 2007 3 -9.319 -4.689 0 0 -9.492 -4.862 -16.153 -6.662 2007 4 4.537 2.193 0 0 3.769 1.424 0.517 3.033 2007 5 10.054 0.867 0 0 8.809 -0.378 5.293 0.967 2007 6 14.833 0.286 0 0 13.473 -1.074 10.628 0.942 2007 7 16.434 -0.240 0 0 15.158 -1.516 11.991 0.178 2007 8 16.416 1.365 0 0 15.256 0.206 11.608 1.418 2007 9 11.907 1.776 0 0 11.033 0.901 6.680 1.409 2007 10 3.263 1.572 0 0 2.912 1.221 -2.580 0.590 2007 11 0.389 6.119 0 0 0.518 6.248 -4.937 5.654 2007 12 -5.950 5.202 0 0 -5.629 5.522 -12.922 3.090 2008 1 -9.731 1.632 0 0 -9.422 1.941 -16.388 -0.164 2008 2 -7.912 -0.059 0 0 -7.723 0.130 -13.303 -0.589 2008 3 0.197 4.827 0 0 0.024 4.654 -6.703 2.788 2008 4 2.000 -0.344 0 0 1.232 -1.113 -3.351 -0.835 2008 5 9.839 0.652 0 0 8.593 -0.593 4.393 0.067 2008 6 12.963 -1.584 0 0 11.603 -2.944 8.959 -0.728 2008 7 15.000 -1.674 0 0 13.724 -2.949 10.713 -1.100 2008 8 15.161 0.111 0 0 14.002 -1.048 10.096 -0.094 2008 9 10.704 0.572 0 0 9.830 -0.302 5.686 0.415 2008 10 0.179 -1.512 0 0 -0.172 -1.864 -6.187 -3.018 2008 11 -4.833 0.897 0 0 -4.704 1.026 -10.747 -0.156 2008 12 -9.050 2.101 0 0 -8.730 2.422 -15.549 0.464 2009 1 -7.993 3.370 0 0 -7.684 3.680 -16.825 -0.601 2009 2 -7.242 0.611 0 0 -7.053 0.800 -12.932 -0.218 2009 3 -4.391 0.239 0 0 -4.564 0.066 -10.838 -1.347 2009 4 3.407 1.063 0 0 2.639 0.295 -2.139 0.377 2009 5 11.308 2.122 0 0 10.063 0.876 6.323 1.997 2009 6 14.722 0.175 0 0 13.362 -1.185 9.956 0.270 2009 7 17.706 1.033 0 0 16.430 -0.243 13.877 2.064 2009 8 15.340 0.290 0 0 14.181 -0.869 10.007 -0.182 2009 9 11.056 0.924 0 0 10.181 0.050 6.265 0.993 2009 10 5.950 4.259 0 0 5.598 3.907 0.693 3.862 2009 11 -5.593 0.137 0 0 -5.464 0.266 -11.944 -1.353 2009 12 -5.950 5.202 0 0 -5.629 5.522 -12.199 3.814 2010 1 -7.240 4.123 0 0 -6.931 4.432 -13.749 2.475 2010 2 -2.778 5.076 0 0 -2.589 5.264 -7.528 5.186 2010 3 -1.971 2.659 0 0 -2.144 2.486 -8.401 1.090 2010 4 3.537 1.193 0 0 2.769 0.424 -1.198 1.319 2010 5 11.111 1.924 0 0 9.866 0.679 6.114 1.788 2010 6 14.185 -0.362 0 0 12.825 -1.722 9.459 -0.228 2010 7 15.430 -1.243 0 0 14.154 -2.519 10.773 -1.040 2010 8 15.287 0.236 0 0 14.127 -0.923 10.433 0.244 2010 9 10.983 0.851 0 0 10.109 -0.023 6.544 1.273 2010 10 4.803 3.112 0 0 4.451 2.760 -0.908 2.262 2010 11 -2.019 3.711 0 0 -1.890 3.840 -7.911 2.679 2010 12 -10.842 0.309 0 0 -10.522 0.630 -18.546 -2.534 2011 1 -6.434 4.930 0 0 -6.124 5.239 -13.658 2.566 2011 2 -7.698 0.155 0 0 -7.510 0.344 -13.308 -0.594 2011 3 -3.280 1.351 0 0 -3.453 1.178 -9.667 -0.177 2011 4 4.204 1.859 0 0 3.435 1.091 -1.388 1.128 2011 5 10.681 1.494 0 0 9.436 0.249 5.400 1.074 2011 6 13.963 -0.584 0 0 12.603 -1.944 9.442 -0.245 2011 7 16.308 -0.365 0 0 15.032 -1.641 11.629 -0.183 2011 8 14.581 -0.470 0 0 13.421 -1.629 9.523 -0.667 2011 9 11.052 0.920 0 0 10.178 0.046 6.268 0.997 2011 10 4.423 2.731 0 0 4.071 2.380 -1.378 1.791 2011 11 -8.538 -2.808 0 0 -8.409 -2.679 -15.449 -4.859 2011 12 -3.524 7.627 0 0 -3.204 7.948 -12.182 3.830 2012 1 -15.600 -4.237 0 0 -15.291 -3.928 -23.440 -7.216 2012 2 -3.253 4.600 0 0 -3.065 4.789 -7.823 4.891 2012 3 -6.018 -1.388 0 0 -6.191 -1.561 -11.975 -2.484 2012 4 4.363 2.019 0 0 3.595 1.251 0.500 3.016 2012 5 9.034 -0.153 0 0 7.789 -1.398 4.239 -0.087 2012 6 14.232 -0.316 0 0 12.872 -1.676 9.987 0.300 2012 7 14.753 -1.920 0 0 13.477 -3.196 10.836 -0.977 2012 8 14.942 -0.108 0 0 13.783 -1.268 9.959 -0.231 2012 9 10.340 0.208 0 0 9.466 -0.666 5.132 -0.139 2012 10 2.160 0.468 0 0 1.808 0.117 -3.521 -0.352 2012 11 -7.955 -2.225 0 0 -7.826 -2.096 -12.932 -2.342 2012 12 -9.558 1.593 0 0 -9.238 1.914 -16.235 -0.223 2013 1 -5.098 6.265 0 0 -4.789 6.574 -10.863 5.361 2013 2 -4.186 3.668 0 0 -3.997 3.857 -8.284 4.430 2013 3 -4.665 -0.034 0 0 -4.838 -0.207 -9.632 -0.142 2013 4 -1.593 -3.938 0 0 -2.362 -4.706 -6.230 -3.714 2013 5 7.781 -1.406 0 0 6.535 -2.651 3.599 -0.727 2013 6 16.490 1.943 0 0 15.130 0.583 12.863 3.176 2013 7 17.547 0.873 0 0 16.271 -0.403 13.697 1.884 2013 8 14.944 -0.107 0 0 13.784 -1.266 11.015 0.826 2013 9 9.970 -0.162 0 0 9.096 -1.036 5.388 0.117 2013 10 6.771 5.079 0 0 6.419 4.728 1.351 4.521 2013 11 4.025 9.755 1 0 NaN NaN NaN NaN