diff --git a/urbanization-index/README.md b/urbanization-index/README.md
index 6616e35..ab66681 100644
--- a/urbanization-index/README.md
+++ b/urbanization-index/README.md
@@ -7,25 +7,16 @@ How Urban Or Rural Is Your State? And What Does That Mean For The 2020 Election?
 
 `urbanization-state.csv` contains FiveThirtyEight's urbanization index for every state. This number is calculated via a weighted average based on each the population of each census tract in that state.
 
-
 `urbanization-census-tract.csv` contains FiveThirtyEight's urbanization index for every census tract.
 
 
 Column | Description
 -------|------------
-`year` |
-`source` |
-`gis_year` |
-`gisjoin` |
-`geoid` | [Geographic Identifier](https://www.census.gov/programs-surveys/geography/guidance/geo-identifiers.html) of the census tract
-`lat_tract` | latitude of the center of the census tract
-`long_tract` | lognitude of the center of the census tract
-`population` | number of people living in the census tract according to data from the 2017 American Community Survey
-`neworder` |
-`distance` |
-`radiuspop_5` | number of people living within a five-mile radius of the census tract
-`dmin` |
-`adj_radiuspop_5` |
-`urbanindex` | a calculation of how urban or rural a given area is; calculated as the natural logarithm of `radiuspop_5`
 `statefips` | FIPS code for each state
-`state` | Name of state
\ No newline at end of file
+`state` | Name of state
+`gisjoin` | [Geographic Identifier](https://www.nhgis.org/user-resources/geographic-crosswalks)for the census tract from the 2010 census
+`lat_tract` | Latitude of the center of the census tract
+`long_tract` | Lognitude of the center of the census tract
+`population` | Number of people living in the census tract according to 5-year American Community Survey data from 2017
+`adj_radiuspop_5` | Estimate of the number of people within a 5-mile radius of a census tract. For a census tract that is more than five miles away any other census tract, we adjust for the minimum distance to the nearest census tract (centroid to centroid) so that TK.
+`urbanindex` | A calculation of how urban or rural a given area is; calculated as the natural logarithm of `adj_radiuspop_5`