I am newbie to this site. Can anyone please guide me about meaning of various notations used on this site such as +/_ figures under the xfer delay, what is the meaning of +/- figures under shift in chains and what is the meaning of average? It will be very useful if this kind of info is made available for new joiners. I am planning my first long distance family trip and thanks to this site I was able to look for connecting trains. But I am confused as to which trains/chains should i select as I don't know the meaning of these notations. Thank you guys, whoever has made this web site.
Sonal Chavan