if this stands for pass thru station - all stations before that in the same table were also pass through but "p" wasn't mentioned. I think it denotes something else.
please wait...Translate to Hindiagar yeh station "pass thru" ke liye hai - toh table mein usse pehle ke saare stations bhi "pass through" the lekin "p" mention nahi tha. Main sochta hun yeh kuch aur indicate karta hai.