At our sentinel sites over the past decade, pH has been trending in the wrong direction. y = -0.01x + 36.6, R2 = 0.39* *The trend lines of the graphs throughout this report illustrate the pattern of the data. The equation (y=) describes the trend line that best fits the data. The R2 value tells us how well the data fit around the trend line, indicating the reliability of the line.

03___trends-in-pH-graph-__–fixed-axis-labels