Manchester 1/2 Marathon "official" watch spilts

Here are my splits from my watch -

0-1 - 7:45.73
1-2 - 8:18.51
2-3 - 8:08.40
3-4 - 8:23.41
4-5 - 8:40.11
5-6 - 8:10.55
6-7 - 8:37.28
7-8 - 8:26.36
8-9 - 8:22.65
9-10 - 8:29.94
10-11 - 8:10.04
11-12 - 8:29.60
12-13 - 7:56.77
13-13.1 - 48.52

Total Time - 1:48:47
Total Avg: 8:17