Sampling data from a large data file example attached

Dear all.

I was trying to write a small code in which I just want to select part of data. lets say attached file. I just want to select region between

58.4818969729 26.9251161301 1.6595774889 and 58.497736653 26.9251161301 1.1188951731

can anybody help me in this regard

Thanks in advance Amberly