2 questions one comment.

1. Can we see a pic of the ice breaker barge in plow mode ?

2. Temps down at all depths , DOs up at all depths all while there is less plankton producing O2. Where is the extra O2 coming from or is the water just holding that much extra O2 ? If yes to the water holding that much extra O2 then is the BOD down that much ?

Comment - this continues to be a great study in how ponds work. What is shown on the chart and understanding why the factors change and how they are related is a great learning event.