profit[product]

Profit per unit of product

demand[product,period]

Demand for each product per period

num_machines[machine_type]

Total number of machines for each machine type

num_machines_per_period[machine_type,period]

For each machine type, the number of machines available per period

num_machines_down_per_period[machine_type,period]

For each machine type, the number of machines down per period

production_time[product,machine_type]

Production time per unit of product on each machine type

store_ub

Number of units that can be stored for each product per period

storage_cost_per_unit

Storage cost per unit per period

final_storage

Number of units of each product in storage at the end of the last period

num_hours_per_period

Number of working hours per period (month)