Allow me to explain instead of Kadachiman
The column have number from 1 to 7 related to the day (Monday to Sunday) that route flew by plane A; plane B will have route to PHOG depart on Tue; KCRP on Wed; and so forth; plane C will have route to PHOG depart on Wed; KCRP on Thu; and so forth
Therefore, you will have 7 planes to cover daily flights to each of those destinations
Hope this explained well
HP