diff --git a/PTPLogger/PTPLogger_Graphing.py b/PTPLogger/PTPLogger_Graphing.py
index 806f3bc..d1e9636 100644
--- a/PTPLogger/PTPLogger_Graphing.py
+++ b/PTPLogger/PTPLogger_Graphing.py
@@ -8,9 +8,6 @@ import tkinter as tk
 from tkinter import filedialog, messagebox, scrolledtext
 
 
-# ===========================
-# PARSE LOG
-# ===========================
 def parse_log(file_path):
     t, rms, freq = [], [], []
     state_events = []
@@ -21,7 +18,6 @@ def parse_log(file_path):
     with open(file_path, encoding='utf-8', errors='ignore') as f:
         for line in f:
 
-            # --- Try syslog timestamp ---
             ts_match = re.match(r'^(\w+ \d+ \d+:\d+:\d+)', line)
             if ts_match:
                 try:
@@ -30,34 +26,31 @@ def parse_log(file_path):
                 except:
                     pass
 
-            timestamp = last_timestamp  # fallback for ptp4l lines
+            timestamp = last_timestamp
+
+            if not timestamp:
+                continue
 
-            # --- RMS/FREQ ---
             m = re.search(r'rms\s+(\d+).*freq\s+([+-]?\d+)', line)
-            if m and timestamp:
+            if m:
                 t.append(timestamp)
                 rms.append(int(m.group(1)))
                 freq.append(int(m.group(2)))
 
-            # --- STATE CHANGE ---
             m = re.search(r'port \d+: (\w+) to (\w+)', line)
-            if m and timestamp:
+            if m:
                 state_events.append((timestamp, f"{m.group(1)}→{m.group(2)}"))
 
-            # --- MASTER CHANGE ---
             m = re.search(
                 r'(selected best master clock|new foreign master)\s+([0-9a-fA-F\.:]+)',
                 line
             )
-            if m and timestamp:
+            if m:
                 master_events.append((timestamp, m.group(2)))
 
     return t, rms, freq, state_events, master_events
 
 
-# ===========================
-# PLOT
-# ===========================
 def plot_data(t, rms, freq, state_events, master_events, detail):
 
     if not t:
@@ -75,7 +68,7 @@ def plot_data(t, rms, freq, state_events, master_events, detail):
     ax2.set_xlabel("Time")
     ax2.grid()
 
-    # --- EVENTS ---
+    # event lines
     for ts, _ in state_events:
         ax1.axvline(ts, color='blue', linestyle='--', alpha=0.7)
         ax2.axvline(ts, color='blue', linestyle='--', alpha=0.7)
@@ -84,7 +77,6 @@ def plot_data(t, rms, freq, state_events, master_events, detail):
         ax1.axvline(ts, color='red', linestyle='--', alpha=0.7)
         ax2.axvline(ts, color='red', linestyle='--', alpha=0.7)
 
-    # --- LEGEND ---
     legend = [
         Line2D([0], [0], color='black', label='RMS/Freq'),
         Line2D([0], [0], color='blue', linestyle='--', label='State'),
@@ -92,11 +84,7 @@ def plot_data(t, rms, freq, state_events, master_events, detail):
     ]
     ax1.legend(handles=legend)
 
-    # --- SAFE DATE FORMAT ---
-    if len(t) > 0:
-        multi_day = any(d.date() != t[0].date() for d in t)
-    else:
-        multi_day = False
+    multi_day = any(d.date() != t[0].date() for d in t)
 
     if multi_day:
         formatter = mdates.DateFormatter('%d %H:%M')
@@ -121,12 +109,9 @@ def plot_data(t, rms, freq, state_events, master_events, detail):
 
     plt.xticks(rotation=45)
     plt.tight_layout()
-    plt.show(block=False)
+    plt.show()
 
 
-# ===========================
-# LOAD FILE
-# ===========================
 def open_file():
     file_path = filedialog.askopenfilename(
         title="Select log",
@@ -142,7 +127,6 @@ def open_file():
 
     plot_data(t, rms, freq, state_events, master_events, detail)
 
-    # --- EVENT LIST ---
     event_box.delete(1.0, tk.END)
 
     events = []
@@ -162,9 +146,7 @@ def open_file():
         event_box.insert(tk.END, "No events found.\n")
 
 
-# ===========================
 # GUI
-# ===========================
 root = tk.Tk()
 root.title("PTP Log Viewer")
 root.geometry("750x550")