diff --git a/NOAA.md b/NOAA.md
index c156163..36e33f3 100644
--- a/NOAA.md
+++ b/NOAA.md
@@ -28,6 +28,8 @@ The maximum pass duration for NOAA satellites, when receiving signals from them
 ![image](https://github.com/user-attachments/assets/bc7d2365-924f-49b3-a69c-73f8ab248697)
 
 APT signal format : 120 lines / minute ,  sending two pictures at the same time (visible / infrared ) 
+8 bits/pixel.The signal amplitude represents the brightness of each pixel. Two lines per second, 4160 pixels per second.
+2080 pixels per line, each channel has 909 useful pixels per line.
 
 ![image](https://github.com/user-attachments/assets/c17d63f1-d898-4672-aedf-fe0bb4d1a45a)