What should be the ideal time distance between riders in the staggered formation?

• The second rider should be 1 second behind the first and the third should be 2 seconds behind the leader
  Explanation:

  "the leader should ride in the left lane position, while the second rider stays one second behind in the right lane position. A third rider maintains the left position two seconds behind the leader. A fourth rider would keep a two second distance behind the second rider"
• The second rider should be 2 seconds behind the first and the third should be 1 seconds behind the leader
• Both should be 3 seconds behind the first
• All of the above