OD_MY29.xlsx is the optical depth of the inspection area of the Spirit rover calculated by the shadow method. OD_Spirit_MY29.xlsx is the optical depth measured by the data of the Spirit rover in MY29. MDAD_MY29.xlsx is the number of dust storm activity recorded in the Mars Dust Activity Database (MDAD) at 0°–30°S in MY29. OD_CLA.xlsx is the optical depth in the candidate landing area of Tianwen-1 calculated by the shadow method. MDAD_CLA.xlsx is the number of dust storm activity recorded in the Mars Dust Activity Database (MDAD) at 10°–40°N.