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	Team	Rating	Sigma	Upper_Bound	Lower_Bound
1	Carolina	3023.854837	315.851044	3655.556924	2392.152750
2	NewEngland	2528.923851	249.356418	3027.636687	2030.211014
3	Arizona	2481.788447	238.509782	2958.808011	2004.768883
4	Denver	2446.198759	222.732289	2891.663336	2000.734182
5	KansasCity	2298.755865	226.612459	2751.980784	1845.530947
6	Cincinnati	2283.711183	241.130567	2765.972317	1801.450049
7	GreenBay	2280.628457	224.428712	2729.485881	1831.771033
8	Seattle	2258.295573	226.275860	2710.847293	1805.743852
9	Pittsburgh	2253.356713	205.659033	2664.674778	1842.038648
10	Minnesota	2206.677367	225.160651	2656.998669	1756.356065
11	Indianapolis	2064.865553	212.715110	2490.295773	1639.435332
12	Houston	2024.548114	217.639953	2459.828020	1589.268209
13	Washington	2013.743909	219.753602	2453.251113	1574.236705
14	Oakland	2003.303882	209.652588	2422.609057	1583.998706
15	NewYorkJ	1995.237202	219.689099	2434.615401	1555.859003
16	Philadelphia	1982.540616	204.496793	2391.534202	1573.547029
17	Buffalo	1956.022312	215.150901	2386.324115	1525.720509
18	NewYorkG	1933.148968	215.881748	2364.912464	1501.385471
19	StLouis	1910.747026	204.584325	2319.915676	1501.578377
20	NewOrleans	1906.324124	210.167751	2326.659626	1485.988621
21	TampaBay	1876.889528	210.769220	2298.427968	1455.351087
22	Chicago	1822.349781	206.602751	2235.555283	1409.144278
23	Detroit	1805.454930	218.463792	2242.382514	1368.527345
24	Atlanta	1719.575687	232.077027	2183.729742	1255.421632
25	Cleveland	1710.227281	225.597397	2161.422076	1259.032487
26	SanFrancisco	1700.045507	219.173789	2138.393085	1261.697929
27	Dallas	1691.284303	231.035740	2153.355783	1229.212823
28	Jacksonville	1683.805238	201.886854	2087.578946	1280.031530
29	Miami	1665.003027	208.857897	2082.718820	1247.287234
30	Baltimore	1648.186945	210.484853	2069.156651	1227.217240
31	SanDiego	1543.534152	227.051875	1997.637903	1089.430401
32	Tennessee	1491.944595	222.993638	1937.931871	1045.957319

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).