What Does These Findings Of Beta Pregnancy Test Indicate?

Tuesday I had my first Beta test. I am about 5 weeks pregnant. My last period was 1/17 and my cycles are about 35 days long. I am not sure exactly when I ovulated but I believe that I ovulated later then a normal cycle so I am not complete sure how far a long I am. My first Betas came back at 618. I know that its most important how the numbers increase but I would like to know if that number is in a normal range or low? I take another test today.