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4 5 00 0034 eda5 4 000 40 06 4eb6 ac16 686d
4a7d 9f67 af1f 0050 e833 8b62 fc13 da66
8 0 10 005c 37a6 0000 0101 080a 04b8 66f7
4add 9045

Internet Header Length

Number of 32 bit words in the IP header
minimum value is 5 (20 bytes)
maximum value is 15 (60 bytes)

In the example the value is 5, which means that the IP header is 20 bytes.
If the value is more than 5 it means the IP header includes options.
For example if the value were 6 it would mean that the IP header was 24 bytes.
Bytes 21 through 24 would be options.

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