1. ... an adjustment is made if the SDR-weighted average of the monthly interest rates referred to in footnote 3 for the immediately preceding December or June respectively differs by 50 basis points or more from the SDR-weighted average interest rate underlying the preceding adjustment in SDR-based rate.
2. Base rates for the above SDR-rate are revised semi-annually and subject to adjustment of the 15 January and 15 July according to the following method...
