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	Team	Rating	Sigma	Upper_Bound	Lower_Bound
1	Carolina	3004.861361	325.983624	3656.828608	2352.894113
2	NewEngland	2799.650598	293.787479	3387.225556	2212.075640
3	Denver	2623.502199	244.404954	3112.312108	2134.692291
4	Minnesota	2392.664036	254.302755	2901.269546	1884.058526
5	Cincinnati	2387.092805	268.714322	2924.521448	1849.664162
6	Arizona	2369.205204	263.859667	2896.924538	1841.485869
7	Indianapolis	2336.680453	244.900431	2826.481316	1846.879591
8	KansasCity	2232.258938	242.828456	2717.915849	1746.602027
9	GreenBay	2195.258568	243.348330	2681.955228	1708.561909
10	Houston	2165.422170	240.249178	2645.920526	1684.923814
11	Seattle	2109.830309	250.671650	2611.173609	1608.487009
12	Washington	2097.847328	249.939750	2597.726829	1597.967827
13	Pittsburgh	2062.105741	230.300546	2522.706834	1601.504648
14	Chicago	1990.748983	230.034098	2450.817178	1530.680787
15	NewYorkG	1966.640907	240.548880	2447.738668	1485.543146
16	Detroit	1940.773770	242.677943	2426.129656	1455.417884
17	Buffalo	1935.921990	243.898214	2423.718417	1448.125563
18	TampaBay	1895.570320	234.474027	2364.518375	1426.622266
19	Oakland	1886.257443	233.801455	2353.860354	1418.654532
20	StLouis	1870.603345	221.423374	2313.450094	1427.756596
21	NewYorkJ	1867.983209	242.211449	2352.406106	1383.560312
22	NewOrleans	1827.841494	223.993130	2275.827754	1379.855234
23	Atlanta	1796.743298	247.307893	2291.359084	1302.127511
24	Baltimore	1759.936261	229.209225	2218.354710	1301.517812
25	Philadelphia	1707.191845	230.680864	2168.553572	1245.830117
26	SanFrancisco	1667.352755	250.534250	2168.421254	1166.284256
27	Jacksonville	1641.931985	227.778787	2097.489558	1186.374412
28	Miami	1629.136989	231.457839	2092.052667	1166.221312
29	Cleveland	1628.593614	246.782410	2122.158433	1135.028794
30	SanDiego	1570.730079	235.624508	2041.979094	1099.481064
31	Dallas	1557.687336	259.639345	2076.966026	1038.408647
32	Tennessee	1415.055372	248.218076	1911.491524	918.619220

Sigma is an expression of confidence in a team's rating. You can treat it as a measure of uncertainty in the rating value, so a lower value means we're more certain about a rating than a higher value.
Upper and lower bounds are a 95% confidence interval for the team's rating, meaning that their true skill rating lies somewhere between those two values (that's not an entirely accurate explanation of a confidence interval, but for our purposes it'll do).