I was expecting some of the knowledgeable usual responders to come back to you on this but as they haven’t I will give you my observations as a long time lurker on this forum, and someone who has had a couple of good tests.
Your lab test appears to be a complete waste of time and money to me.
It is not clear whether or not you completed a good warm up. 15 or 20 minutes at just below your starting pace is usually recommended before commencing the test proper.
1 km increments seems too large a step up each time.
The glaring problem with the test appears to be the length of time between speed increases. The recommendation is usually a minimum of 3 minutes between lactate samples/increases in speed, to allow the heart rate to stabilise before the next increase in speed. Going up so quickly, combined with such big increments, appears to have produced nothing of value and no indication of where your actual VT1/AeT, or VT2/AnT lie.
In your shoes I would ask for my money back. But then again, I am a Yorkshireman!