Id. at 149. The court noted that it also would be acceptable under the unit rule to value Tracts 4-203 and 4-204 separately—i.e., valuing each unit (each tract) as if it was held in fee simple ownership. Id. at 148 n.15. “What the [fact-finder] could not do, consistent with the unit rule, was… [to] comput[e] separately the value of the various constituent legal interests in the Condemned Properties.” Id. at 148.