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coeffa = new Array(31);
coeffa[0]=1;
coeffa[1]=1.5;
coeffa[2]=1.7;
coeffa[3]=2.1;
coeffa[4]=2.5;
coeffa[5]=2.85;
coeffa[6]=3.2;
coeffa[7]=3.55;
coeffa[8]=3.9;
coeffa[9]=4.2;
coeffa[10]=4.5;
coeffa[11]=4.75;
coeffa[12]=5;
coeffa[13]=5.2;
coeffa[14]=5.4;
coeffa[15]=5.6;
coeffa[16]=5.8;
coeffa[17]=6;
coeffa[18]=6.2;
coeffa[19]=6.4;
coeffa[20]=6.6;
coeffa[21]=6.75;
coeffa[22]=6.9;
coeffa[23]=7.05;
coeffa[24]=7.2;
coeffa[25]=7.35;
coeffa[26]=7.5;
coeffa[27]=7.65;
coeffa[28]=7.8;
coeffa[29]=7.9;
coeffa[30]=8;

coeffb = new Array(31);
coeffb[0]=1;
coeffb[1]=1.5;
coeffb[2]=1.7;
coeffb[3]=2.1;
coeffb[4]=2.5;
coeffb[5]=2.85;
coeffb[6]=3.2;
coeffb[7]=3.55;
coeffb[8]=3.9;
coeffb[9]=4.2;
coeffb[10]=4.4;
coeffb[11]=4.6;
coeffb[12]=4.8;
coeffb[13]=5;
coeffb[14]=5.2;
coeffb[15]=5.25;
coeffb[16]=5.3;
coeffb[17]=5.35;
coeffb[18]=5.4;
coeffb[19]=5.45;
coeffb[20]=5.5;
coeffb[21]=5.55;
coeffb[22]=5.6;
coeffb[23]=5.65;
coeffb[24]=5.70;
coeffb[25]=5.75;
coeffb[26]=5.80;
coeffb[27]=5.85;
coeffb[28]=5.9;
coeffb[29]=5.95;
coeffb[30]=6;

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