what does it say if I got my worst section result and best section result in a single pt?

I did a PT today and got a 157 

In one of the LR sections I got -3 (highest I ever got) and in another section i got -14 (the worst I ever got) 

in the -3 section I only guessed the last 2 questions cause I didn't have time, I found that section to be easy and I felt I understood everything 

In the -14 section I was tired, it was the third LR section that I did and the fourth section of the test - I did find it more diffcult and I was spending more time than usual on easier questions 8-12 and got them all wrong, maybe thats a factor?

this was my score: 

Section 1: LR (experimental) -7

Section 2: LR -3

Section 3: RC -7

Section 4: LR -14 

If only the experimental section was 4 instead of 1, I think would have gotten a 163 instead of a 157