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	Team	Rating	Sigma	Upper_Bound	Lower_Bound
1	NewEngland	3035.139238	342.403559	3719.946356	2350.332120
2	Carolina	2974.639642	340.015823	3654.671288	2294.607996
3	Cincinnati	2509.392887	312.340766	3134.074419	1884.711354
4	Minnesota	2501.188186	288.426522	3078.041231	1924.335141
5	Denver	2420.895345	274.576277	2970.047899	1871.742791
6	Indianapolis	2224.590194	271.021302	2766.632798	1682.547589
7	GreenBay	2215.637152	287.968527	2791.574206	1639.700098
8	Arizona	2173.347916	299.015166	2771.378249	1575.317583
9	Pittsburgh	2162.564665	245.091009	2652.746684	1672.382647
10	KansasCity	2130.837058	265.956062	2662.749183	1598.924934
11	NewYorkG	2062.774527	256.493269	2575.761066	1549.787988
12	StLouis	2058.124254	246.592119	2551.308491	1564.940017
13	Houston	2025.183381	269.233093	2563.649566	1486.717195
14	Buffalo	2021.171818	262.782425	2546.736669	1495.606968
15	Washington	2008.937881	273.899267	2556.736415	1461.139347
16	Oakland	1962.007255	261.726182	2485.459619	1438.554891
17	Atlanta	1893.594199	271.012648	2435.619496	1351.568902
18	Seattle	1893.106608	290.521910	2474.150428	1312.062788
19	NewOrleans	1882.181611	234.486894	2351.155399	1413.207823
20	Chicago	1879.527170	256.871930	2393.271030	1365.783309
21	Philadelphia	1872.161833	259.765078	2391.691989	1352.631676
22	NewYorkJ	1867.757318	273.834781	2415.426879	1320.087756
23	Miami	1855.301254	264.097770	2383.496794	1327.105713
24	TampaBay	1849.293455	261.668901	2372.631258	1325.955653
25	SanFrancisco	1782.001150	275.854713	2333.710575	1230.291725
26	Cleveland	1730.541270	264.677640	2259.896550	1201.185989
27	Detroit	1722.097146	280.109120	2282.315387	1161.878906
28	Jacksonville	1687.904279	257.657434	2203.219146	1172.589412
29	Tennessee	1550.766018	278.232538	2107.231093	994.300943
30	Baltimore	1499.489459	264.609574	2028.708607	970.270311
31	SanDiego	1471.374541	262.226953	1995.828448	946.920634
32	Dallas	1379.230381	286.505276	1952.240933	806.219828

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).