diff --git a/README.md b/README.md
index aa28079..1d5fdaa 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ See a live instance at [http://3lips.30hours.dev](http://3lips.30hours.dev).
 
 - Install docker and docker-compose on the host machine.
 - Clone this repository to some directory.
-- Edit the [./config/config.yml](./config./config.yml) file for scenario.
+- Edit the [./config/config.yml](config./config.yml) file for scenario.
 - Run the docker compose command.
 
 ```bash
diff --git a/event/algorithm/localisation/EllipseParametric.py b/event/algorithm/localisation/EllipseParametric.py
index fa5a49f..ff1ef29 100644
--- a/event/algorithm/localisation/EllipseParametric.py
+++ b/event/algorithm/localisation/EllipseParametric.py
@@ -3,13 +3,12 @@
 @author 30hours
 """
 
-from data.Ellipsoid import Ellipsoid
-from algorithm.geometry.Geometry import Geometry
-import numpy as np
 import math
+import numpy as np
 import itertools
 
-from concurrent.futures import ThreadPoolExecutor
+from data.Ellipsoid import Ellipsoid
+from algorithm.geometry.Geometry import Geometry
 
 class EllipseParametric:
 
diff --git a/event/algorithm/localisation/EllipsoidParametric.py b/event/algorithm/localisation/EllipsoidParametric.py
index 3235c7a..07020b1 100644
--- a/event/algorithm/localisation/EllipsoidParametric.py
+++ b/event/algorithm/localisation/EllipsoidParametric.py
@@ -3,10 +3,11 @@
 @author 30hours
 """
 
+import math
+import numpy as np
+
 from data.Ellipsoid import Ellipsoid
 from algorithm.geometry.Geometry import Geometry
-import numpy as np
-import math
 
 class EllipsoidParametric:
 
diff --git a/event/algorithm/localisation/SphericalIntersection.py b/event/algorithm/localisation/SphericalIntersection.py
index d38ecc7..96e381a 100644
--- a/event/algorithm/localisation/SphericalIntersection.py
+++ b/event/algorithm/localisation/SphericalIntersection.py
@@ -3,9 +3,10 @@
 @author 30hours
 """
 
-from algorithm.geometry.Geometry import Geometry
-import numpy as np
 import math
+import numpy as np
+
+from algorithm.geometry.Geometry import Geometry
 
 class SphericalIntersection:
 
diff --git a/script/README.md b/script/README.md
index f843783..bc6d949 100644
--- a/script/README.md
+++ b/script/README.md
@@ -2,7 +2,15 @@ This folder is for post-processing scripts on API data.
 
 ## Scripts
 
-- **plot_accuracy.py** plots a comparison between ADS-B truth and target localisation data in ENU coordinates.
+- **plot_accuracy.py** plots a comparison between ADS-B truth and target localisation data in ENU coordinates. Also generates RMS error values for the data.
+  ```
+  python plot_associate.py <input.ndjson> <target-id> (--start_time <posix>) (--stop_time <posix>)
+  ```
+
+- **plot_associate.py** plots when each radar detected a particular target in a 2D heatmap.
+  ```
+  python plot_associate.py <input.ndjson> <target-id> (--start_time <posix>) (--stop_time <posix>)
+  ```
 
 ## Docker Environment