diff --git a/gps_tool/MainWindow.py b/gps_tool/MainWindow.py
index 633ed75..66113b6 100644
--- a/gps_tool/MainWindow.py
+++ b/gps_tool/MainWindow.py
@@ -97,10 +97,10 @@ class Ui_MainWindow(object):
         self.txtAltitude.setFrameShadow(QFrame.Sunken)
         self.label_9 = QLabel(self.centralwidget)
         self.label_9.setObjectName(u"label_9")
-        self.label_9.setGeometry(QRect(140, 120, 49, 16))
+        self.label_9.setGeometry(QRect(130, 120, 81, 16))
         self.label_13 = QLabel(self.centralwidget)
         self.label_13.setObjectName(u"label_13")
-        self.label_13.setGeometry(QRect(140, 160, 49, 16))
+        self.label_13.setGeometry(QRect(130, 160, 49, 16))
         self.txtMode = QLabel(self.centralwidget)
         self.txtMode.setObjectName(u"txtMode")
         self.txtMode.setGeometry(QRect(130, 40, 49, 16))
@@ -172,7 +172,7 @@ class Ui_MainWindow(object):
         self.txtHDOP.setText(QCoreApplication.translate("MainWindow", u"0", None))
         self.txtVDOP.setText(QCoreApplication.translate("MainWindow", u"0", None))
         self.txtAltitude.setText(QCoreApplication.translate("MainWindow", u"0", None))
-        self.label_9.setText(QCoreApplication.translate("MainWindow", u"meters", None))
+        self.label_9.setText(QCoreApplication.translate("MainWindow", u"m (WGS84)", None))
         self.label_13.setText(QCoreApplication.translate("MainWindow", u"m/sec", None))
         self.txtMode.setText(QCoreApplication.translate("MainWindow", u"0", None))
         self.label_6.setText(QCoreApplication.translate("MainWindow", u"Grid:", None))
diff --git a/gps_tool/gps_tool.py b/gps_tool/gps_tool.py
index c82ad67..c74fb2c 100755
--- a/gps_tool/gps_tool.py
+++ b/gps_tool/gps_tool.py
@@ -11,7 +11,6 @@ from time import strftime, time
 from gps import *
 import gpxpy
 
-
 from PySide2.QtGui import *
 from PySide2.QtWidgets import QApplication, QMainWindow, QGraphicsEllipseItem, QFileDialog, QGraphicsScene, QGraphicsProxyWidget
 from PySide2.QtCore import QObject, Slot, Signal, QThread, QDir, QRect
@@ -111,7 +110,7 @@ class QtGPSWindow(MainWindow):
     self.orange = QColor(255,80,0)
     self.yellow = QColor(255,211,0)
     self.green = QColor(0,255,0)
-    self.green = QColor(0,0,255)
+    self.blue = QColor(0,0,255)
         
     self.scene = QtWidgets.QGraphicsScene()
     self.viewSatellites.setScene(self.scene)
@@ -177,22 +176,22 @@ class QtGPSWindow(MainWindow):
         if azim >= 360 or elev < -10 or elev > 90:
           continue;
         
-        cname = 'black'
+        cname = '#000000'
         color = self.black
         if snr < 12:
-          cname = 'gray'
+          cname = '#808080'
           color = self.gray
         elif snr < 30:
-          cname = 'red'
+          cname = '#ff0000'
           color = self.red
         elif snr < 36:
-          cname = 'yellow'
+          cname = '#ffd300'
           color = self.yellow
         elif snr < 42:
-          color = 'green'
+          color = '#00ff00'
           color = self.green
         else:
-          color = 'blue'
+          color = '#0000ff'
           color = self.blue
         
         txt = "%4u %4u %4u %3u %1u" % (prn, azim, elev, snr, used)
@@ -217,6 +216,7 @@ class QtGPSWindow(MainWindow):
       polar = figure.add_subplot(111, projection='polar')
       polar.scatter(theta, radius, c=colors, s=area, cmap=None, alpha=0.75)
       polar.set_rorigin(90.0)
+      polar.set_xticklabels([])
       polar.set_yticklabels([])
       for i, prn in enumerate(prns):
         polar.annotate(str(prn), (theta[i], radius[i]))
diff --git a/gps_tool/mainwindow.ui b/gps_tool/mainwindow.ui
index 9229d7b..7c07ece 100644
--- a/gps_tool/mainwindow.ui
+++ b/gps_tool/mainwindow.ui
@@ -318,20 +318,20 @@
    <widget class="QLabel" name="label_9">
     <property name="geometry">
      <rect>
-      <x>140</x>
+      <x>130</x>
       <y>120</y>
-      <width>49</width>
+      <width>81</width>
       <height>16</height>
      </rect>
     </property>
     <property name="text">
-     <string>meters</string>
+     <string>m (WGS84)</string>
     </property>
    </widget>
    <widget class="QLabel" name="label_13">
     <property name="geometry">
      <rect>
-      <x>140</x>
+      <x>130</x>
       <y>160</y>
       <width>49</width>
       <height>16</height>
diff --git a/gps_tool/setup.sh b/gps_tool/setup.sh
index f6ca1f7..b9c8861 100755
--- a/gps_tool/setup.sh
+++ b/gps_tool/setup.sh
@@ -7,4 +7,4 @@ sudo apt-get -y --ignore-missing install python3-all python3-dev python3-tk idle
 # Python addons
 sudo -H pip install --upgrade pip
 sudo -H pip install configparser pyside2
-sudo -H pip install --upgrade pyserial numpy scipy scapy gps gpxpy maidenhead virtualenv virtualenvwrapper
+sudo -H pip install --upgrade pyserial matplotlib numpy scipy scapy gps gpxpy maidenhead virtualenv virtualenvwrapper
diff --git a/gps_tool/PyYAML-5.4.1-cp38-cp38-win_amd64.whl b/windows/PyYAML-5.4.1-cp38-cp38-win_amd64.whl
similarity index 100%
rename from gps_tool/PyYAML-5.4.1-cp38-cp38-win_amd64.whl
rename to windows/PyYAML-5.4.1-cp38-cp38-win_amd64.whl
diff --git a/gps_tool/setup.cmd b/windows/setup.cmd
similarity index 100%
rename from gps_tool/setup.cmd
rename to windows/setup.cmd