Survey 7: May 4-10 Survey 6: April 27-May 3 Survey 5: April 20-26 Survey 4: April 13-19 Survey 3: April 6-12 Survey 2: March 30-Apr. 5 Survey 1: March 24 - 29
April 30, 2020 (Survey 5) April 23, 2020 (Survey 4) April 15, 2020 (Survey 3)