(1) If the law requires or allows for mitigation under this provision, the following shall apply:
1. Imprisonment of not less than three years shall be substituted for imprisonment for life.
2. In cases of imprisonment for a fixed term, no more than three quarters of the statutory maximum term may be imposed. In case of a fine the same shall apply to the maximum number of daily units.
3. Any increased minimum statutory term of imprisonment shall be reduced as follows:
a minimum term of ten or five years, to two years;
a minimum term of three or two years, to six months;
a minimum term of one year, to three months;
in all other cases to the statutory minimum.
(2) If the court may in its discretion mitigate the sentence pursuant to a law which refers to this provision, it may reduce the sentence to the statutory minimum or impose a fine instead of imprisonment.