Add a 3-Hour graph

src/gui/properties/speedplotview.cpp

@@ -230,6 +230,10 @@ void SpeedPlotView::setPeriod(const TimePeriod period)
         m_currentMaxDuration = 30min;
         m_currentAverager = &m_averager30Min;
         break;
+    case SpeedPlotView::HOUR3:
+        m_currentMaxDuration = 3h;
+        m_currentAverager = &m_averager6Hour;
+        break;
     case SpeedPlotView::HOUR6:
         m_currentMaxDuration = 6h;
         m_currentAverager = &m_averager6Hour;

src/gui/properties/speedplotview.h

@@ -71,6 +71,7 @@ public:
         MIN1 = 0,
         MIN5,
         MIN30,
+        HOUR3,
         HOUR6,
         HOUR12,
         HOUR24

src/gui/properties/speedwidget.cpp

@@ -71,6 +71,7 @@ SpeedWidget::SpeedWidget(PropertiesWidget *parent)
     m_periodCombobox->addItem(tr("1 Minute"));
     m_periodCombobox->addItem(tr("5 Minutes"));
     m_periodCombobox->addItem(tr("30 Minutes"));
+    m_periodCombobox->addItem(tr("3 Hours"));
     m_periodCombobox->addItem(tr("6 Hours"));
     m_periodCombobox->addItem(tr("12 Hours"));
     m_periodCombobox->addItem(tr("24 Hours"));