[ns] interpreting a trace file

["ruhiya mahalati" <ruhiya@rediffmail.com>]

hi

i am beginner to NS and am working on a simulation project. I need to calculate average packet delay. I guess this can be done from the trace file. Can someone please tell me how to interpret a tracefile. I am using exponential distribution and gamma distribution. my trace for exponential distribution looks something like this :

+ -t 56.6600092128397 -s 3 -d 5 -p exp -e 1000 -c 0 -i 1 -a 0 -x {3.0 7.0 0 ------- null}

- -t 56.6600092128397 -s 3 -d 5 -p exp -e 1000 -c 0 -i 1 -a 0 -x {3.0 7.0 0 ------- null}

h -t 56.6600092128397 -s 3 -d 5 -p exp -e 1000 -c 0 -i 1 -a 0 -x {3.0 7.0 -1 ------- null}

+ -t 56.6600092128397 -s 3 -d 5 -p exp -e 440 -c 0 -i 2 -a 0 -x {3.0 7.0 1 ------- null}

- -t 56.7000092128397 -s 3 -d 5 -p exp -e 440 -c 0 -i 2 -a 0 -x {3.0 7.0 1 ------- null}

h -t 56.7000092128397 -s 3 -d 5 -p exp -e 440 -c 0 -i 2 -a 0 -x {3.0 7.0 -1 ------- null}


how do i find out which columns stand for timestamp?

thanks.