TMs for NO migration within the docking sites of trHbN for different lag times τ. The matrix elements are color-coded, with black, blue, green, yellow, brown, gray, and white for Tij > 0.9, 0.9–0.7, 0.7–0.5, 0.5–0.3, 0.3–0.1, 0.1–0.01, and <0.01, respectively. The diagonal elements represent the population density of the concerned docking site, and the off-diagonal elements represent transitions between a docking site in a row and a docking site in a column.