Evaluation and conclusion of salinity

According to Wikipedia, the salinity around Vancouver Island should be between 3.1% to 3.2% in average. However, since we are in the Pedder Bay, where rivers and streams may flow into the ocean and there is also intermingling between the seawater and fresh underground water, the salinity of seawater in the bay should be a little bit lower than that.

We collected the data as 3.00%, 2.51%, 2.43%, 3.03%, which meet our expectations.

However, our expectation for the change of the salinity is that the high tide salinities should be lower than the low tide ones. This is because when there the tide is high, more fresh water should flow into the ocean, so the salinity should be reduced.

The data in the maintenance centre meet our expectation: the low tide salinity was 3.03% and the high tide one was 2.43%; however, in the spiritual centre spot, we got the opposite result.

I think this might be the mistake in labelling them when we measured them.

Or, if we actually had the correct data...

The reason might be because of the streams flowing into different locations varies in different time of the day coincidently, or the organisms might also influence the salinity into the direction unexpected.