A semiconductor memory device is capable of simultaneously carrying out a first operation and a second operation. To this end, phase-specific parameters of a physiological variable X are determined by calculating, at least for a portion of values x lying in a specifiable time period, a mean g in each case of values X for which X=x applies for their predecessors, \u03c4 describing a time interval, and determining the phase-specific parameters by evaluating the mean g. The device allows for compensation of effects caused at the edges of the groups of sense cells. Pointed free ends of the clip-on index are pointed toward scales on the dial discs at two sides of the meter to indicate a desired range of reading values. , a pressure of from 1 to 50 kgcm2g, an H2oil ratio of from 180 to 1800 literliter, and an LHSV of from 2 to 10 hr1 as an isomerization step. The distance between the upper ends is adjustable at the connection of the lower ends.