Training

Today's training was at bishan stadium in the morning.
We did 20 mins of warm-up outside the stadium.
The pace was quite fast but i managed to keep up.
After doing stretching and drills...
we did 10times of 150m and rested 5 mins then continued
with 8 more times of 150m...
The timing was supposed to be around 25secs.
My first two timings were in the range of 25secs but...
the rest i wasn't able to maintain at 25secs
Here's my timing:
1) 25.56s 10) 26.78s
2) 25.85s 11) 27.38s
3) 26.81s 12) 27.07s
4) 27.31s 13) 27.25s
5) 27.91s 14) 28.22s
6) 27.50s 15) 27.78s
7) 26.59s 16) 29.37s
8) 28.84s 17) 30.81s
9) 28.91s 18) 28.81s
My timings were inconsistent but thank you
carolyn and the rest for pushing me...