New Basic Rent no ascertained
If by the relevant Basic Rent review date, the New Basic Rent has not been ascertained in accordance with this schedule the Tenant shall continue to pay the Basic Rent payable at that time until the New Basic Rent has been ascertained and within fourteen days thereafter the Tenant shall pay to the Landlord an amount equal to the difference (if any) between the New Basic Rent and the Basic Rent actually paid for the period since the relevant Basic Rent review date together with Interest less 4% on each installment calculated for period from the date on which that installment would have been due until the date of payment.