2 and 3 are examples of non linear weighting functions weighting function 3 is the schlichtkrull index weighting function 4 corresponds to weighting function 1 over the hypoglycemic range in the hyperglycemic range the weighting function 4 initially increases in a section of it that is adjacent to the target range and then switches to being constant as such function 4 is an example to show that a weighting function does not have to have a greater slope than inside the target range in all places outside the target range rather it is sufficient for the slope to be greater than in the target range just in a range adjacent to the target range fig3 shows an example of a series of blood glucose concentration values of a diabetic over a period of time of approx 110 hours the concentration values shown were determined at intervals of approx 5 minutes the target range of the weighting function shown in fig1 is indicated by horizontal lines at blood glucose concentrations of 70 mg dl and 180 mg dl in fig2 fig3 shows that the blood glucose concentration is subject to major variations during the day both hyper and hypoglycemic periods occur in a diabetic and are to be prevented by optimal adjustment of the dosing of insulin administrations for analysis the concentration values of the series shown in fig3 were initially used to calculate disturbance values as function values of the weighting function described by means of fig1 these disturbance values were then analyzed for 12 hour time intervals each in that a mean value of the disturbance values of the.