Hi everyone,

I was wondering if someone could help me by explaining in simple terms what this cross-correlation plot is showing?

The two time series I am showing are:

X = Changes in charcoal particles in sediment throughout time.

Y = Changes in spruce pollen percentage throughout time.

I am very unsure of what the lag represents so if someone could explain that, I would appreciate it very much.

I am complete beginner at cross-correlation and trying desperately to learn it quickly!