To consistently get data in a timely way, you must start out oriperly. Start by getting agreement from the team members on when they will provide their weekly data to you. Make sure that you get this issue settled during the launch phase at the very beginning of the TSPi process. In the first team meeting, have the team leader decide when and where you will hold the weekly team meeting and get the team to agree on when everyone will submit their data to you. After you have this agreement, you can press any late members to give you their data. If they don't quickly shape up, you will have a sound basis for taking the problem to the team leader and to the instructor.