The text of the chart follows:

Week 40: No activity
Week 41: No activity
Week 42: Sporadic
Week 43: No activity
Week 44: Sporadic
Week 45: Sporadic
Week 46: Local
Week 47: Regional
Week 48: Regional
Week 49: Widespread
Week 50: Widespread
Week 51: Widespread
Week 52: Widespread
Week 53: Widespread
Week 1: Regional
Week 2: Local
Week 3: Local
Week 4: Sporadic
Week 5: Sporadic
Week 6: Sporadic
Week 7: Sporadic
Week 8: Sporadic
Week 9: Sporadic
Week 10: Sporadic
Week 11: Sporadic
Week 12: Sporadic
Week 13: Sporadic
Week 14: No activity
Week 15: Sporadic
Week 16: No activity
Week 17: No activity
Week 18: No activity
Week 19: No activity
Week 20: No activity
Week 21: No activity
Week 22: No activity