STAYING IN BANGALORE

HI GUYS,
I AM NIVIN,
STAYING IN BANGALORE NW.
HOW CAN WE CALCULATE THE CONNECTION SPEED?
HOW IT IS DIFFER FRM DOWNLOADING SPEED?
IM USING AIRTEL GPRS CONNECTION.
IT COSTS 274 MONTHLY ….
UN LIMITED DOWN LOADING……
IT SHOWS SPEED OF 924 KB/S……
AND A DOWNLOADING SPEED 15 TO 20 KB/S IN DAYTIME.
5 TO 10 KB/S SPEED AT 6PM TO 12 AM.
I THING THIS IS A GOOD PLAN.
NO HEAD ACHES
ANY WER IN IN INDIIA