Your team adopts the Scrum methodology and is carrying out the first 10-day sprint, for which they selected 40 story points. At the beginning of the sprint, the team progressed extremely slowly, clearing only half the story points they had expected to clear after 3 days. Progress sped up greatly and the team came back on track by day 6 and continued to make steady progress to clear all story points by day 8. Draw a Burndown Chart representing the teams performance in the sprint and provide a brief analysis for the observed team behaviour.