Salt levels of soil and water AFTER rainfall

I have developed a key which determines to amount of salt present in the soil/water

KEY
1 drop = Extremly salty (turns milky instantly)
2 drops = Very salty (turns milky after 2 drops)
3 drops = Salty (turns milky after 3 drops)
4 drops = Mildly Salty (turns milky after 4 drops)
5 drops = Low Salt (turns milky slowly needs 5 drops)

TEST 1 -Water Samples A-H.

Sample A = 1 drop
Sample B = 1 drop
Sample C = 1 drop
Sample D = 2 drops
Sample E = 1 drop
Sample F = 1 drop
Sample G = 2 drops
Sample H = 1 drop
AVERAGE 1.25

Test 2- Water Samples A-H

Sample A = 2 drops
Sample B = 1 drop
Sample C = 2 drops
Sample D = 1 drop
Sample E = 2 drops
Sample F = 2 drops
Sample G = 2 drops
Sample H = 1 drop
AVERAGE 1.625

These results conclude that the salt content in the water is relatively high, however, this is to be expected as it is seawater and therefore contains a much higher content of salt than fresh water would have.

Salt levels for soil samples A-H.

Sample A = 3 drops
Sample B = 2 drops
Sample C = 3 drops
Sample D = 3 drops
Sample E = 2 drops
Sample F = 2 drops
Sample G = 3 drops
Sample H = 3 drops
AVERAGE 2.62

Test 2 -Salt levels for soil samples

Sample A = 2 drops
Sample B = 2 drops
Sample C = 3 drops
Sample D = 2 drops
Sample E = 2 drops
Sample F = 2 drops
Sample G = 3 drops
Sample H = 2 drops
AVERAGE 2.25

I really was not sure what to expect during this test. I did expect it to contain a little bit more salt as this data was collected after rainfall, however, still remains at an average between 2.62 and 2.25 drops and very salty