Ye Jo average Apne likha hai, kitne dino ki average hai?
I think, 7 days ya 30 days ka Hoga kyuonki yearly basis pe calculate kare to winter months chhodkar ye train 90 minutes se jyada late nahi Hoti normally.
One more question? IRI ke time table me kisi train ke departure ya arrival ke Baad + karke Jo time likha hota hai wo kitne dino ka average delay arr/dep hota hai?