100 Meter Sprints

Ten rounds, each for time of:
100 meter Sprint
Rest 90 seconds

My phone messed up with timing but i know the first round is right and i restarted timing on the 3rd round. But by looking at my times its probably 17 seconds on my 2nd round.

Round 1: 17 seconds
Rest 90 seconds

Round 2: 17 seconds ?
Rest 90 seconds

Round 3: 17.85 seconds
Rest 90 seconds

Round 4: 17 seconds
Rest 90 seconds

Round 5: 18 seconds
Rest 90 seconds

Round 6: 17 seconds
Rest 90 seconds

Round 7: 18 seconds
Rest 90 seconds

Round 8: 19 seconds
Rest 90 seconds

Round 9: 19 seconds
Rest 90 seconds

Round 10: 18 seconds
DONE!

Total time: 16.46
Average: 17.785