Packet Loss, Reordering, Jitter simple image explanation

In the below case packet #2 is lost




In the case below, #2 is out of order received




In thie case each packet is sent in 20 ms interval. But received in different intervals. #1 received almost in 20 ms, #2,#2,#4 received altogether 60 ms later. #5 was almost reaching within 20ms.


references:
https://webrtcglossary.com/jitter-buffer/