What cost should i consider in EC2 savings plan for hourly commitment.

I want to buy ec2 savings plan from aws. In that i have to enter hourly commitment in amount. How should i calculate this? t3.2xlarge, 1 year commitment, all upfront, tenancy shared, linux os, 24*7(all time). Should i enter 0.2518(savings plan rates) or 0.4224(on demand) in hourly commitment. I have attached images. Help with this issue