The tier I annuity component of a widow(er), remarried widow(er), or a surviving divorced spouse with a child of the employee in his or her care is 75 percent of the PIA computed under Sec. 228.10 of this part. The amount may be adjusted for certain reductions and deductions described in Sec. Sec. 228.15-228.20 of this part and is subject to the family maximum. See Sec. 228.14 of this part.