Packet Error Rate - Excluded Packets
ID packets and packets that are missing channel numbers (such as HCI and BTSnoop) will not display data. ID packets are excluded because they can not have errors or indicate retransmission and therefore dilute the percentages for other packet types. Packets without channel numbers are excluded because the graphs are channel-specific. Before packets are captured, the Scroll Bar in Classic Bluetooth PER Stats contains the message "ID packets and packets without a channel number (such as HCI) are excluded", and the Scroll Bar in Bluetooth low energy PER Stats contains the message "Packets without a channel number (such as HCI) are excluded".
Example: Excluded Packets Message in Scroll Bar (Classic Bluetooth)