diff --git a/src/data.rs b/src/data.rs
index aa0ddc7..b35cdf6 100644
--- a/src/data.rs
+++ b/src/data.rs
@@ -25,8 +25,8 @@ pub fn get_epoch_ms() -> u128 {
 
 #[derive(Clone, Debug)]
 pub struct Packet {
-    pub relative_time: u128,
-    pub absolute_time: u128,
+    pub relative_time: f64,
+    pub absolute_time: f64,
     pub direction: SerialDirection,
     pub payload: String,
 }
@@ -34,8 +34,8 @@ pub struct Packet {
 impl Default for Packet {
     fn default() -> Packet {
         Packet {
-            relative_time: 0,
-            absolute_time: get_epoch_ms(),
+            relative_time: 0.0,
+            absolute_time: get_epoch_ms() as f64,
             direction: SerialDirection::Send,
             payload: "".to_string(),
         }
@@ -44,8 +44,8 @@ impl Default for Packet {
 
 #[derive(Clone, Debug)]
 pub struct DataContainer {
-    pub time: Vec<u128>,
-    pub absolute_time: Vec<u128>,
+    pub time: Vec<f64>,
+    pub absolute_time: Vec<f64>,
     pub dataset: Vec<Vec<f32>>,
     pub raw_traffic: Vec<Packet>,
 }
diff --git a/src/gui.rs b/src/gui.rs
index 004d4c2..213e98d 100644
--- a/src/gui.rs
+++ b/src/gui.rs
@@ -1194,9 +1194,7 @@ impl MyApp {
                                 }
                             }
                         }
-                        FileDialogState::None => {
-                            self.file_opened = false;
-                        }
+                        FileDialogState::None => {}
                     }
                 });
             });
diff --git a/src/serial.rs b/src/serial.rs
index ce5a74e..59531b4 100644
--- a/src/serial.rs
+++ b/src/serial.rs
@@ -252,8 +252,8 @@ fn perform_writes(
         }
 
         let packet = Packet {
-            relative_time: Instant::now().duration_since(t_zero).as_millis(),
-            absolute_time: get_epoch_ms(),
+            relative_time: Instant::now().duration_since(t_zero).as_millis() as f64,
+            absolute_time: get_epoch_ms() as f64,
             direction: SerialDirection::Send,
             payload: cmd,
         };
@@ -274,8 +274,8 @@ fn perform_reads(
             let delimiter = if buf.contains("\r\n") { "\r\n" } else { "\0\0" };
             buf.split_terminator(delimiter).for_each(|s| {
                 let packet = Packet {
-                    relative_time: Instant::now().duration_since(t_zero).as_millis(),
-                    absolute_time: get_epoch_ms(),
+                    relative_time: Instant::now().duration_since(t_zero).as_millis() as f64,
+                    absolute_time: get_epoch_ms() as f64,
                     direction: SerialDirection::Receive,
                     payload: s.to_owned(),
                 };