Qtr tie prop question

Qtr tie prop question Im sure this has been around but its the first I have seen of it. One of my spots has will each qtr end in a tie. 1st No -360 Yes +280 2nd -500/+400 3rd -360/+280 4th -500/+400 Was wondering if anyone had any stats on games ending qtrs in a tie?? Sure seems like it would be more likely than 1 in 5.
If anything the NOs are good at those prices.
In perhaps one of the least sophisticated analyses of all time I looked at 7 random weeks of the NFL and in games lined from Pick to 3 and came up with. 1st Qtr 11-30 ties vs. non ties 2nd Qtr 9-32 3rd Qtr 8-33 4th Qtr 3-38 Very minute sample size but it seems that NO in the 4th is a very +ev bet.
I think the prop means the individual score of each quarter, and I am guessing your analysis is the cumulative score after each quarter. Please confirm.

[QUOTE=joelshitshow;38840]I think the prop means the individual score of each quarter, and I am guessing your analysis is the cumulative score after each quarter. Please confirm.[/QUOTE] That is my understanding. As stated, I had not seen the prop previously. No SB in the last 10 has ended in a tie for the 4th.