Result of 1 K by 13 Sets Hill Interval Training

I wanted to come under 4:10 at least in seven out of the thirteen sets.
The result is I succeeded in eight. That was good.
I also wanted to come under 4:20 in all thirteen sets.
The result is I failed in the 12th. (The real lap for the 8th set is a couple of seconds faster because I failed to stop the watch at finish.)
That I finished under 4:00 in the last set was a pleasant surprise.
I was in complete oxygen debt and my mind was almost blank;
I had no clue how fast I was going. Here are the laps of the entire sets:

1st K: 3:51.88
Rest: 2:00.01
2nd K: 4:08.04
Rest: 2:00.14
3rd K: 4:01.85
Rest: 2:00.24
4th K: 4:08.87
Rest: 2:00.10
5th K: 4:01.90
Rest: 2:00.35
6th K: 4:17.20
Rest: 2:00.35
7th K: 4:00.99
Rest: 2:00.29
8th K: 4:20.96 (stopped the watch a couple of seconds after finish)
Rest: 2:00.32
9th K: 4:15.01
Rest: 2:00.10
10th K: 4:16.74
Rest: 2:00.27
11th K: 4:06.82
Rest: 2:00.27
12th K: 4:21.40
Rest 2:00.25
13th K: 3:58.57
Total 13 K: 1:17:52

All the major training sessions before the Ohme 30 K Road Race are over.
There will be some minor conditioning scheduled for this week,
but it's all less than 3 K and nothing is so intensive.
I would like to eat well and sleep well to condition myself for the race.