Consider the tree rings are they the same thickness? Indicate to the diagram the factors affecting the width of the ring.

A tree ring is a layer of wood that has formed in one season. New wood cells are formed by dividing cambium cells. The better the conditions of the growing season, the more often the cambium cells will divide, and the wood cells will reach large sizes and the annual ring will be thicker, and vice versa. Thus, the following environmental factors can affect the width of the annual ring: average monthly temperature, the number of rainy and dry days, the number of cloudy and sunny days.