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	Team	Rating	Sigma	Upper_Bound	Lower_Bound
1	Denver	3072.293952	351.748340	3775.790631	2368.797273
2	NewEngland	2981.869491	366.808370	3715.486231	2248.252752
3	Cincinnati	2932.392407	374.265621	3680.923648	2183.861165
4	Carolina	2827.551350	378.450182	3584.451713	2070.650987
5	GreenBay	2697.011239	353.184585	3403.380409	1990.642069
6	Minnesota	2314.915635	333.341891	2981.599417	1648.231853
7	StLouis	2234.801513	307.901299	2850.604111	1618.998914
8	NewOrleans	2202.938421	270.886403	2744.711227	1661.165615
9	Arizona	2173.347916	299.015166	2771.378249	1575.317583
10	Oakland	2153.125559	298.962246	2751.050051	1555.201067
11	Atlanta	2083.009007	297.389952	2677.788910	1488.229104
12	Seattle	2035.626531	319.156772	2673.940074	1397.312987
13	NewYorkG	1992.165991	279.027642	2550.221276	1434.110706
14	Pittsburgh	1987.501748	276.604856	2540.711459	1434.292037
15	Philadelphia	1962.751249	296.887979	2556.527207	1368.975291
16	Indianapolis	1935.665380	298.884520	2533.434420	1337.896340
17	NewYorkJ	1900.965843	319.651996	2540.269835	1261.661850
18	KansasCity	1899.422754	293.013236	2485.449226	1313.396282
19	Washington	1892.450878	305.042979	2502.536836	1282.364920
20	TampaBay	1887.859305	296.137455	2480.134215	1295.584396
21	Miami	1829.868188	312.875367	2455.618922	1204.117455
22	Cleveland	1808.322437	285.089822	2378.502082	1238.142792
23	Buffalo	1783.863212	306.185713	2396.234638	1171.491786
24	Houston	1730.225922	296.130047	2322.486016	1137.965829
25	Jacksonville	1664.052119	293.447091	2250.946300	1077.157938
26	Chicago	1609.574021	301.928522	2213.431065	1005.716978
27	Baltimore	1607.992855	284.926793	2177.846440	1038.139270
28	SanFrancisco	1583.896831	304.138278	2192.173387	975.620275
29	SanDiego	1566.323551	280.201601	2126.726754	1005.920349
30	Dallas	1521.443297	325.048160	2171.539617	871.346976
31	Detroit	1388.859519	313.389677	2015.638872	762.080165
32	Tennessee	1242.317199	316.571677	1875.460553	609.173845

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).