USHCN 2.5 – OMG … The Old Data Changes Every Day

Yesterday I did a post about old USHCN changing from month to month.

So I thought why compare data sets from one day to the next. Certainly they can’t be changing old data every day … could they?

So I compared the June 21 2014 TAvg Final dataset (ushcn.tavg.latest.FLs.52i.tar.gz) from here  to the same file from June 22 2014

And just to keep it manageable. I compared only the data from Jan 1998.

And here we are … the data even for 1998 changes from day to day.

Consider the “SANDPOINT EXP STN” station. On June 21 the monthly average temperature for Jan 1998 was -1.33C.  On June 22 2014 it was -0.89C for an increase in temperature of .44C.

These are all the records where the temperature changed or the Error Flag changed.

11 got warmer. 4 got colder. And even the non-Estimated data changes. OMG. How can you actually analyze the data if the past temperature changes every day.

Year STATE NAME Station LATITUDE LONGITUDE ELEVATION Month DATA1 E1 Version1 DATA2 E2 Version2 dif
1998 FL ARCADIA USH00080228 27.2181 -81.8739 9.1 1 17.61 E v2.5.0.20140621 17.63 E v2.5.0.20140622 0.02
1998 ID PRIEST RIVER EXP STN USH00107386 48.3514 -116.8358 725.4 1 -2.77 v2.5.0.20140621 -2.78 v2.5.0.20140622 -0.01
1998 ID SANDPOINT EXP STN USH00108137 48.2928 -116.5578 640.1 1 -1.33 a v2.5.0.20140621 -0.89 a v2.5.0.20140622 0.44
1998 MI NEWBERRY 3S USH00205816 46.3133 -85.5106 259.1 1 -9 v2.5.0.20140621 -8.86 v2.5.0.20140622 0.14
1998 NC ELIZABETH CITY USH00312719 36.3097 -76.205 2.4 1 7.93 a v2.5.0.20140621 7.94 a v2.5.0.20140622 0.01
1998 NY SARATOGA SPRINGS 4 SW USH00307484 43.0331 -73.8167 94.5 1 -3.19 v2.5.0.20140621 -3.17 v2.5.0.20140622 0.02
1998 TN CROSSVILLE ED & RESEARCH USH00402202 36.0147 -85.1311 551.7 1 5.14 a v2.5.0.20140621 5.17 a v2.5.0.20140622 0.03
1998 VA BREMO BLUFF USH00440993 37.7092 -78.2886 68.6 1 6.25 d v2.5.0.20140621 6.24 d v2.5.0.20140622 -0.01
1998 VA FARMVILLE 2 N USH00442941 37.3264 -78.3864 137.2 1 4.94 a v2.5.0.20140621 4.93 a v2.5.0.20140622 -0.01
1998 VA HOPEWELL USH00444101 37.2992 -77.2772 12.2 1 7.27 b v2.5.0.20140621 7.29 b v2.5.0.20140622 0.02
1998 VA NORFOLK INTL AP USH00446139 36.9033 -76.1922 9.1 1 8.18 v2.5.0.20140621 8.33 v2.5.0.20140622 0.15
1998 VA WILLIAMSBURG 2 N USH00449151 37.3017 -76.7039 21.3 1 6.96 a v2.5.0.20140621 6.98 a v2.5.0.20140622 0.02
1998 WA NORTHPORT USH00455946 48.9114 -117.8069 423.7 1 -2.13 v2.5.0.20140621 -2.14 v2.5.0.20140622 -0.01
1998 WI MANITOWOC USH00475017 44.0869 -87.6522 178 1 -4.12 E v2.5.0.20140621 -4.11 E v2.5.0.20140622 0.01
1998 WI WATERTOWN USH00478919 43.1742 -88.7364 251.5 1 -3.94 v2.5.0.20140621 -3.93 v2.5.0.20140622 0.01

USHCN 2.5 – 1998 Keeps Getting Warmer

This is another post on USHCN warming. You can read more here.

USHCN puts out a monthly dataset every day. For the last month or so I was using the data I downloaded on on 20140509. I have been using the Final tavg data.

Today I downloaded the 20140621 version from here: ftp://ftp.ncdc.noaa.gov/pub/data/ushcn/v2.5

I thought … why not map both sets and compare the average temperature for the USA in Jan 1998 between the two sets of data.

In the legend I placed the count of Real versus Estimated and the average.

I was shocked. They are still warming 1998!

On May 9 the mean of the Estimated data was 2.5C and the mean of the Real Data was 1.74 … which is a .76C spread.

On June 21 the mean of the Estimated data was 2.72C and the mean of the Real Data was 1.7 … which is a 1.02C spread.

OMG. They keep changing the data. And they are still warming 1998!!!

 

USHCN v2.5.0.20140509 Final USA January 1998 Estimated vs Not Estimated

USHCN v2.5.0.20140621 Final USA January 1998 Estimated vs Not Estimated

USHCN 2.5 – Estimated Warming By Year and Month

This is the 3rd or 4th post on USHCN warming. You can read more here.

Today I have taken the Final data from 1895 to 2013 and am comparing the average for each month Estimated to Real in Celsius.

As you can see, in all cases the Estimated data is warmer. What a shock! (Not really).

Month Estimated Real Estimated minus Real
Jan 0.17 -1.02 1.19
Feb 1.95 0.8 1.15
Mar 6.39 5.42 0.97
Apr 11.53 10.85 0.68
May 16.45 15.96 0.49
Jun 21.05 20.54 0.51
Jul 23.61 23.21 0.4
Aug 22.86 22.37 0.49
Sep 18.94 18.42 0.52
Oct 12.97 12.45 0.52
Nov 6.5 5.82 0.68
Dec 1.5 0.54 0.96

The next table is just the difference for each year and month. If Estimated is larger than Real, then the color will be red, otherwise blue. If the difference is more than 1 or -1, then bold will emphasize.

Red means the Estimated data is hotter than the non-estimated for that year and month.

Blue is much rarer than red. And bold blue is very rare indeed.

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1895 0.12 -0.29 0.04 0.06 -0.38 0.22 -0.2 -0.21 -0.31 0.09 0.26 0.67
1896 0.78 0.9 1.08 1.21 0.84 0.54 0.15 0.29 0.39 0.43 0.4 0.1
1897 -0.24 0.48 0.66 0.23 -0.14 -0.07 0.03 -0.11 0.44 -0.11 -0.19 0.9
1898 -0.27 0.16 -0.24 0.16 -0.41 -0.05 0 0.23 0.03 -0.82 -0.93 -0.35
1899 0.17 -0.03 0.39 -0.37 -0.33 -0.54 -0.28 -0.23 0.14 -0.47 0.18 0.26
1900 0.89 0.97 1.35 0.56 -0.35 -0.05 -0.11 -0.22 -0.34 -0.74 -0.23 0.48
1901 1.57 1.74 1.16 0.43 0.24 -0.07 0.16 0.26 -0.22 -0.05 0.17 0.42
1902 1.25 0.74 -0.3 0.37 0.25 -0.1 0.09 0.18 0.01 -0.25 -0.6 0.87
1903 0.26 0.58 0.17 0.68 -0.27 0.45 0.44 0.69 0.38 0.6 0.53 1.15
1904 1.16 2.62 2.11 1.34 0.67 0.92 0.39 0.92 0.34 0.29 0.7 0.72
1905 0.84 1.04 0.67 -0.12 -0.07 -0.3 0.04 0.21 0.02 -0.99 -0.05 -0.09
1906 -0.59 0.19 -0.05 0.05 -0.43 0.06 0.39 0.45 0.22 0.03 -0.27 0.69
1907 -0.59 0.76 -0.06 0.16 -0.05 -0.34 -0.56 -0.55 -0.55 0.05 -0.19 -0.5
1908 0.6 1.07 1.28 0.34 -0.38 -0.63 -0.21 -0.25 -0.4 -0.58 -0.04 -0.34
1909 -0.14 -0.15 0.05 -0.62 -1.05 -0.93 -0.42 -0.63 -0.62 -0.2 -0.81 -0.28
1910 0.45 0.01 -0.19 -0.14 0.18 0.26 0.16 0.04 0.41 -0.71 -0.45 0.86
1911 -0.29 -0.92 0.64 0.23 -0.73 -0.1 -0.48 -0.48 -0.59 -1.21 -0.93 -1.71
1912 0.52 0.77 -0.39 -1.29 -0.63 -0.29 -0.21 0.11 -0.8 -1.14 -0.63 -1.13
1913 -0.49 0.49 0.01 -0.33 0.13 0.1 0.35 0.11 0.11 0.05 -0.23 -0.81
1914 0.3 -0.11 0.46 -0.09 -0.24 0.02 0.35 0.51 0.03 -0.25 0.53 0.33
1915 0.32 0.27 0.92 -0.3 -0.32 -0.81 -0.32 0.4 -0.19 -0.2 0.21 0.87
1916 -0.95 1.24 1.12 0.31 -0.29 0.34 -0.04 0.15 0.11 -0.18 -0.07 -0.13
1917 -0.26 1.36 0.54 0.37 0.52 0.84 0.39 0.42 0.96 1.34 0.75 2.01
1918 1.65 1.44 0.36 0.67 -0.23 0.64 0.4 0.48 0.65 0.89 0.26 0.45
1919 0.38 0.68 0.44 0.33 0.26 0.25 0.06 0.27 0.32 0.06 -0.15 0.11
1920 -0.23 0 0.04 -0.12 0.35 0.35 0.36 -0.03 -0.31 -0.24 -1.1 -1.55
1921 -0.48 0.04 -0.06 -0.22 0.16 0.07 0.24 0.49 1.12 0.9 1.9 1.18
1922 0.74 1.04 0.84 0.06 0.24 0.96 1 0.29 -0.28 -0.31 -0.52 0.79
1923 1.07 0.4 0.58 0.63 0.44 0.57 0.64 0.43 0.57 -0.28 0.35 0.61
1924 1.11 0.85 0.35 0.55 0.4 0.72 -0.13 0.17 0.21 0.08 0.78 1.65
1925 1.15 1.3 0.76 0.57 0.84 0.72 0.54 -0.03 0.1 1.05 0.39 0.56
1926 0.62 0.8 0.26 0.37 0.12 0.05 -0.19 0.18 0.13 0.11 0.68 0.87
1927 0.66 1.66 1.22 1.51 1.05 0.39 0.3 0.39 0.75 0.72 0.56 1.4
1928 1.72 1.14 0.81 0.82 0.23 0.48 -0.13 0.52 0.33 0.75 0.16 0.79
1929 1.2 1.5 1.22 0.28 0.4 0.32 0.56 0.33 1.16 0.81 0.71 0.9
1930 1.6 1.2 1.13 1.28 0.41 0.44 0.42 0.18 0.71 0.38 0.9 1.29
1931 0.72 1.08 0.95 1 1 1.09 1.11 1.02 0.71 0.89 1.55 2.38
1932 2.79 3.21 2.77 0.53 0.34 0.07 0.08 -0.3 0.02 0.64 1.28 1.63
1933 0.5 1.75 0.86 0.16 0.35 0.15 0.17 -0.39 0.27 0.81 0.81 1.63
1934 0.72 0.89 0.46 0.32 0.33 0.65 0.26 0.35 0.35 0.27 -0.09 0.07
1935 1.64 1.13 1.69 0.54 0.41 0.23 0.19 0.38 0.29 0.4 -0.41 0.98
1936 1.35 0.82 0.89 0.12 -0.08 0.03 -0.12 0.82 0.31 0.39 -0.11 0.94
1937 -1.3 0.45 1.19 0.47 0.35 0.17 0.21 0.71 1 1.11 0.74 1.24
1938 1.14 0.36 -0.11 0.11 0.35 0.45 0.52 0.63 0.61 0.71 2.21 1.6
1939 2.08 2.43 1.33 1.17 0.59 0.91 0.39 0.04 1.17 0.95 1 1.01
1940 2.19 1.81 2.04 1.62 1.01 0.94 0.65 0.96 0.9 0.83 1.36 1
1941 1.98 1.7 1.58 0.55 0.33 0.68 0.31 0.76 0.63 0.8 0.75 0.99
1942 1.53 1.4 1.28 0.6 1.13 1.01 0.65 0.73 0.52 0.81 1.12 1.96
1943 2.79 2.13 2.21 1.56 1.28 0.86 0.74 1.49 1.44 1.31 1.83 2.08
1944 1.86 3.17 2.79 2.1 1.24 1.75 1.66 1.47 1.37 0.97 0.62 1.64
1945 2.6 1.55 0.5 1.36 1.42 1.22 1.12 0.81 1.41 1.34 1.29 1.8
1946 1.31 1.42 0.78 0.69 0.85 0.64 0.35 0.53 0.46 1.09 1.63 1.11
1947 1.74 1.8 1.67 1.74 1.46 1.74 0.69 0.94 1.15 0.95 1.7 1.24
1948 1.74 1.75 2.07 1.99 1.39 1.58 1.42 1.2 1.15 1.41 1.58 2.71
1949 3.09 2.72 2.35 1.18 1.07 1.23 1.26 1.09 0.95 1.21 1.12 1.58
1950 2.17 1.89 1.21 1.02 0.96 0.61 0.48 0.18 0.42 0.39 0.19 -0.22
1951 0.1 0.24 -0.1 0.11 0.53 0.86 0.83 0.98 1.05 0.39 0.94 1.45
1952 1.74 1.23 1.03 0.49 0.87 1.05 0.57 0.88 1.18 1.36 1.27 1.84
1953 2.57 2.28 1.89 1.42 1.54 1.23 1.07 1.05 1.05 1.23 1.3 2.37
1954 3.03 1.96 1.8 1.71 1.14 1 0.98 1.3 1.56 1.55 1.07 1.56
1955 2.4 2.56 2.84 1.47 1.44 0.89 0.53 0.56 0.73 1.07 2.66 2.38
1956 2.34 2.75 2.63 2.04 1.64 0.94 0.8 0.99 1.35 0.9 0.89 1.51
1957 2.08 1.76 0.49 0.71 0.67 0.82 0.23 0.81 1.06 0.76 0.64 0.99
1958 1.26 1.86 0.85 0.66 0.8 0.91 0.49 0.23 0.34 0.51 1.05 1.97
1959 1.71 1.83 1.35 1.03 0.5 0.41 0.48 0.23 0.93 1.37 1.87 1.03
1960 1.63 1.78 1.47 1.58 1.6 1.22 0.62 1.09 1.09 1.07 1.2 0.73
1961 0.49 1.19 1.12 1.15 0.97 0.6 0.76 0.49 0.44 0.66 1.3 1.82
1962 2.18 2.52 1.54 1.73 2.17 1.69 1.39 1.52 1.58 1.67 1.54 1.83
1963 2.97 2.51 1.71 1.53 1.51 0.88 0.69 0.99 1.1 0.9 1.32 2.04
1964 1.83 1.6 2 1.69 1.12 1.32 0.59 0.73 1.34 0.82 1.69 2.19
1965 2.19 2.71 2.31 2.27 1.35 1.15 0.95 1.06 1.98 1.16 1.98 1.28
1966 1.9 1.88 1.31 1.23 0.77 0.31 0.4 0.6 0.48 0.55 1.27 1.16
1967 1.9 2.34 2.17 1.23 0.92 0.35 0.62 0.92 0.69 0.7 0.78 0.62
1968 2.15 2.09 1.05 0.98 0.35 0.16 0.44 0.32 0.07 0.59 0.06 0.38
1969 1.2 0.12 0.42 0.02 0.14 0.44 -0.02 0.43 0.16 -0.12 0.04 -0.31
1970 0.61 0.1 0.39 0.06 -0.03 -0.4 -0.28 -0.37 -0.24 -0.07 0.57 0.81
1971 0.61 -0.16 0.34 -0.45 -0.37 -0.25 -0.54 -0.32 -0.37 -1.2 -0.15 -0.25
1972 0.54 0.3 0.29 -0.46 -0.11 0.12 0.66 0.05 0.6 0.97 0.67 1.59
1973 0.97 1.11 0.38 0.35 0.47 -0.01 -0.28 0.31 -0.33 -0.02 0.53 0.92
1974 1.64 0.14 1.1 1.02 1.64 0.84 0.26 1 1.16 0.67 0.15 0.7
1975 2.37 1.31 0.6 0.76 0.69 0.95 0.51 0.8 1.21 0.78 0.9 1.61
1976 2.12 1.92 1.16 1.12 0.65 0.57 0.81 0.71 0.79 0.43 1.05 1
1977 2.2 1.74 0.42 0.29 -0.14 0.6 0.18 0.55 0.32 0.39 0.14 1.96
1978 2.17 2.74 1.95 0.79 0.33 0.32 0.58 0.6 1.02 1.25 1.09 1.57
1979 2.13 2.65 1.21 1.24 0.65 0.53 0.57 0.73 0.79 0.68 0.28 0.05
1980 -0.13 0.89 0.32 0.28 0.41 1.01 1.3 0.62 0.44 0.59 0.33 0.88
1981 0.91 0.81 0.4 0.72 0.05 0.43 0.51 0.57 0.67 0.8 1.03 1.76
1982 3.21 2.28 1.64 1.23 0.59 0.57 0.39 1.14 1.49 1.42 2.14 2.52
1983 1.18 1.55 1.46 1.44 1.45 1.44 1.46 0.99 1.3 1.18 1.04 1.53
1984 1.56 1.75 1.82 1.23 1.24 1.03 0.73 0.6 1.22 1.37 0.91 1.72
1985 2.37 1.79 1.2 0.64 0.51 0.5 0.14 0.11 0.13 0.37 -0.62 -0.18
1986 0.22 0.82 0.45 0.1 -0.06 0.22 0.38 0.07 0.19 -0.23 0.19 0.12
1987 -0.03 -0.03 -0.06 0.21 -0.38 0.02 0.33 0.21 0.24 0.8 0.19 0.5
1988 0.16 0.84 0.53 0.42 -0.14 0.48 0.27 0.21 0.53 1.23 0.87 1.19
1989 1.3 1.43 1.7 1.43 0.76 0.45 0.61 0.46 0.96 0.33 0.65 0.85
1990 0.6 1.47 1.06 0.71 0.89 0.23 0.31 0.29 0.13 0.52 0.54 0.53
1991 0.2 0.43 -0.87 -0.35 -0.11 -0.55 -0.22 -0.15 0.66 -0.31 0.72 -0.14
1992 -0.31 -0.15 -0.29 0.34 0.13 0 0.24 0.3 0.02 -0.07 -0.69 -0.15
1993 -0.78 0.22 0.13 -0.41 -0.05 -0.46 0.05 -0.06 0.04 0.34 0.6 0.75
1994 1.62 1.72 1.15 0.88 0.45 0.34 0.48 0.31 0.37 0.74 1.25 0.81
1995 1.36 0.96 0.67 0.06 -0.14 0.36 -0.05 -0.33 0.09 -0.08 0.94 1.04
1996 1.23 1.51 0.81 0.66 -0.12 -0.02 0.44 0.14 -0.01 -0.28 0.68 0.19
1997 0.43 0.7 0.1 0.42 0.73 -0.22 0.16 0.47 0.04 0.61 0.84 0.44
1998 0.76 -0.3 0.62 0.23 -0.39 -0.34 -0.13 -0.17 -0.43 0.31 1.3 0.54
1999 0.65 1.02 0.27 0.69 0.46 0.48 0.2 0.77 0.6 0.44 0.49 0.43
2000 1.46 1.21 0.3 0.8 0.16 0.42 0.39 0.84 0.51 0.89 1.11 1.13
2001 1.69 1.95 1.58 1.16 0.53 1.21 1.28 0.81 1.21 1.1 1.56 1.36
2002 1 1.19 1.1 1.45 1.06 1.28 1.28 1.33 0.82 2.34 1.58 1.46
2003 2.79 2.3 1.38 1.1 1.24 1.19 1.57 1.19 0.86 1.23 0.87 1.95
2004 2.17 1.21 2 1.3 0.97 1.6 1.12 1.4 0.83 1.03 0.71 1.55
2005 2.55 1.57 2.26 0.74 1.36 0.32 0.74 1.3 0.52 0.95 0.61 1.22
2006 -0.1 1.36 1.29 0.17 0.5 0.26 -0.05 0.21 0.52 0.54 0.54 0.35
2007 0.37 1.33 0.96 0.86 0.58 0.45 0.05 0.29 0.03 0.14 1.04 1.63
2008 1.17 1.8 1.6 -0.1 -0.18 0.48 0.19 0.28 0.22 0.37 0.6 1.99
2009 2.74 1.54 1.3 0.67 0.26 0.84 0.93 0.7 0.86 0.6 1.15 1.07
2010 2.51 1.8 1.06 0.51 0.51 0.99 0.36 0.87 0.28 0.62 0.47 1.59
2011 2.17 1.84 1.87 0.96 -0.12 0.82 0.79 1.02 1.27 1.38 1.19 1.29
2012 2.1 2.83 0.95 1.39 0.96 1.33 0.63 1.2 1.13 1.63 1.56 1.56
2013 1.64 1.56 2.02 1.36 0.69 0.97 0.7 0.85 1.04 1.04 2.05 2.56

USHCN 2.5 – How Much Of The Data is Estimated?

I’ve been dabbling in the USHCN data to see how much is Estimated and how much is Real. You can read more here.

This is California (Nevada is there because of the shape of California) for the 12 months of 2013. The red stations (with name and elevation) are Estimated. The blue stations (no name to save space) are “real“.

For just California December 2013, 18 out of 43 are Estimated. The Estimated stations average 8.12C and the “Real” stations average 7.02.  Click image for full size.

USHCN_CA_2013

 

 

 

 

 

 

 

 

 

 

 

 

USHCN 2.5 – Estimated Data Is Warming Data – Arizona

An addendum to yesterdays post about “Estimated” data.

These are the 9 months in Arizona with the biggest change due to Estimated data. I’ll focus on December (the top graph). Remember, this is the Final data after all the other adjustments.

About 15% of the data is Estimated from neighboring stations.

The trend of REAL data is negative -.04C/decade.

Then they add in about 15% Estimated data with a trend of  +0.43C/decade.

The net result is a new trend of +0.02C/decade.

Presto. Magic. A downward trend is now an upward trend. (Click on graph for larger)

AZ USCHCN Final v2.5.0.20140509 (from 1895) Dec

AZ USCHCN Final v2.5.0.20140509 (from 1895) Feb

AZ USCHCN Final v2.5.0.20140509 (from 1895) Jan

AZ USCHCN Final v2.5.0.20140509 (from 1895) Mar

AZ USCHCN Final v2.5.0.20140509 (from 1895) May

AZ USCHCN Final v2.5.0.20140509 (from 1895) Jul

AZ USCHCN Final v2.5.0.20140509 (from 1895) Nov

AZ USCHCN Final v2.5.0.20140509 (from 1895) Oct

AZ USCHCN Final v2.5.0.20140509 (from 1895) Apr

USHCN 2.5 – Estimated Data Is Warming Data

Over at Steven Goddard’s blog he is trying to point out how much USHCN data is “Estimated”.

From the readme.txt file: " 'E' indicates the data value is an estimate from surrounding values; no original value is available;"

So I had a copy of the data from last month because of a previous post.

So I thought … take the Final data and graph each month comparing data with an E flag to all the data without an E flag.

Surprise. Estimated data is Warming Data. And that is ignoring all the manipulation in going from Raw to Final data.

USCHCN Final v2.5.0.20140509 (from 1895) Jan

USCHCN Final v2.5.0.20140509 (from 1895) Feb

USCHCN Final v2.5.0.20140509 (from 1895) Mar

USCHCN Final v2.5.0.20140509 (from 1895) Apr

USCHCN Final v2.5.0.20140509 (from 1895) May

USCHCN Final v2.5.0.20140509 (from 1895) Jun

USCHCN Final v2.5.0.20140509 (from 1895) Jul

USCHCN Final v2.5.0.20140509 (from 1895) Aug

USCHCN Final v2.5.0.20140509 (from 1895) Oct

USCHCN Final v2.5.0.20140509 (from 1895) Sep

USCHCN Final v2.5.0.20140509 (from 1895) Nov

USCHCN Final v2.5.0.20140509 (from 1895) Dec

USHCN 2.5 Adjustments (Final – Raw)

Over at Nick Stokes blog they are trying to tear down a graph used by WUWT and Steven Goddard. They have made a valid point that the last few skyrocketing points may be because of late data.

But I thought I would take a look at monthly adjustments to tavg, tmin and tmax. Each of these 3 graph sets show the Final Temperature  minus the  Raw Temperature.

1) As you can see the USHN adjustments cool the past (especially the warm 20s/30s/40s).

2) I don’t know why they adjust tmax so much.

3) I really, really want to know why Dec/Jan/Feb (and to a lesser degree Nov and Mar) are so heavily manipulated. The adjustments can change by .5C from year to year. Bizarre.

Click for bigger.

 

v2.5.0.20140509_tavg_final-raw_ushcn v2.5.0.20140509_tmin_final-raw_ushcn v2.5.0.20140509_tmax_final-raw_ushcn