The incentive periods are 3 calendar months if there are no suspensions not including the end date in your example.

If an agreement starts on 1/1/2016 then the baseline incentive periods would run like this

incstartincend

01/01/201603/31/2016

04/01/201606/30/2016

07/01/201609/30/2016

10/01/201612/31/2016

01/01/201703/31/2017

04/01/201706/30/2017

07/01/201709/30/2017

10/01/201712/31/2017

the suspension would not include the end date as that is the date of return. so 2/1/16 to 2/10/16 would be 9 days of suspension.

changing the period to :

01/01/201604/09/2016

04/10/2016 07/09/2016