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	Team	Rating	Sigma	Upper_Bound	Lower_Bound
1	Denver	2917.923043	387.664369	3693.251782	2142.594305
2	NewEngland	2903.055308	399.593089	3702.241486	2103.869129
3	Cincinnati	2888.591325	393.624934	3675.841193	2101.341457
4	GreenBay	2852.995960	389.686042	3632.368045	2073.623875
5	Carolina	2695.486823	432.104709	3559.696240	1831.277405
6	Atlanta	2321.893390	344.420036	3010.733463	1633.053318
7	Pittsburgh	2242.349612	312.822193	2867.993998	1616.705227
8	Minnesota	2190.113026	375.488450	2941.089926	1439.136126
9	Indianapolis	2145.786956	342.365652	2830.518259	1461.055652
10	NewYorkJ	2101.602636	369.275511	2840.153658	1363.051613
11	Buffalo	2042.683515	344.417677	2731.518868	1353.848162
12	Cleveland	2031.377925	331.511795	2694.401516	1368.354335
13	NewYorkG	2028.396343	321.363720	2671.123784	1385.668903
14	StLouis	2023.039198	358.939676	2740.918549	1305.159847
15	Philadelphia	2002.558259	307.994423	2618.547106	1386.569413
16	Arizona	2000.298603	343.781252	2687.861107	1312.736099
17	NewOrleans	1938.746556	318.218266	2575.183088	1302.310025
18	Oakland	1876.708241	356.937050	2590.582340	1162.834142
19	SanDiego	1854.813618	332.563590	2519.940799	1189.686438
20	Houston	1816.878883	347.059434	2510.997750	1122.760016
21	TampaBay	1786.597000	367.234274	2521.065548	1052.128452
22	Seattle	1781.359173	379.943932	2541.247037	1021.471309
23	SanFrancisco	1780.684557	349.875430	2480.435417	1080.933696
24	Washington	1759.992392	331.137601	2422.267595	1097.717190
25	Dallas	1731.230381	382.974310	2497.179001	965.281761
26	Miami	1675.789625	353.371144	2382.531913	969.047338
27	Chicago	1659.461167	316.548986	2292.559138	1026.363195
28	KansasCity	1530.129358	353.829504	2237.788366	822.470350
29	Detroit	1529.118923	354.371600	2237.862122	820.375723
30	Baltimore	1504.591097	331.464242	2167.519580	841.662613
31	Jacksonville	1432.884565	325.491739	2083.868043	781.901088
32	Tennessee	1363.566735	353.093211	2069.753156	657.380314

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).