Table : The efficiency of different combinations of sampling schemes from Table and Table for all systems. The efficiency is given by (V • t) -1 and normalized to the currently used algorithm in NECI, which is unif:unif unif-unif:fast-fast. The fastest speedup factor per system is printed bold. The algorithms are lexicographically sorted by sampling quality unif < fast < full. The error for the last digit is given in parentheses.