You need 72 months of experience, 48 of which may be substituted for a 4 year degree in Engineering, leaving 24 months of required work experience. Assuming you have a 4 year degree, and your experience qualifies (see below), it sounds like you meet the requirements. What is your specific concern?
Qualifying experience claimed for this Engagement includes only subordinate level engineering work. It does not overlap with credit claimed for education. It does not include overtime, training, orientation, non-engineering work, or summer work while a student. Qualifying experience may be less than the total number of months worked; it is computed by Total Months Worked less Non-Qualifying Experience. Qualifying experience means engineering employment that requires the applicant to use sound judgment in making engineering decisions and contributes to progress towards becoming a Professional Engineer.