% this function gives the temperature according to DT-670 silicon diode thermometer

function tnow = TempCal(voltages)

TT=   1.0e+02 *[
   0.014000000000000
   0.015000000000000
   0.016000000000000
   0.017000000000000
   0.018000000000000
   0.019000000000000
   0.020000000000000
   0.021000000000000
   0.022000000000000
   0.023000000000000
   0.024000000000000
   0.025000000000000
   0.026000000000000
   0.027000000000000
   0.028000000000000
   0.029000000000000
   0.030000000000000
   0.031000000000000
   0.032000000000000
   0.033000000000000
   0.034000000000000
   0.035000000000000
   0.036000000000000
   0.037000000000000
   0.038000000000000
   0.039000000000000
   0.040000000000000
   0.042000000000000
   0.044000000000000
   0.046000000000000
   0.048000000000000
   0.050000000000000
   0.052000000000000
   0.054000000000000
   0.056000000000000
   0.058000000000000
   0.060000000000000
   0.065000000000000
   0.070000000000000
   0.075000000000000
   0.080000000000000
   0.085000000000000
   0.090000000000000
   0.095000000000000
   0.100000000000000
   0.105000000000000
   0.110000000000000
   0.115000000000000
   0.120000000000000
   0.125000000000000
   0.130000000000000
   0.135000000000000
   0.140000000000000
   0.145000000000000
   0.150000000000000
   0.155000000000000
   0.160000000000000
   0.165000000000000
   0.170000000000000
   0.175000000000000
   0.180000000000000
   0.185000000000000
   0.190000000000000
   0.195000000000000
   0.200000000000000
   0.210000000000000
   0.220000000000000
   0.230000000000000
   0.240000000000000
   0.250000000000000
   0.260000000000000
   0.270000000000000
   0.280000000000000
   0.290000000000000
   0.300000000000000
   0.310000000000000
   0.320000000000000
   0.330000000000000
   0.340000000000000
   0.350000000000000
   0.360000000000000
   0.370000000000000
   0.380000000000000
   0.390000000000000
   0.400000000000000
   0.420000000000000
   0.440000000000000
   0.460000000000000
   0.480000000000000
   0.500000000000000
   0.520000000000000
   0.540000000000000
   0.560000000000000
   0.580000000000000
   0.600000000000000
   0.650000000000000
   0.700000000000000
   0.750000000000000
   0.773500000000000
   0.800000000000000
   0.850000000000000
   0.900000000000000
   0.950000000000000
   1.000000000000000
   1.050000000000000
   1.100000000000000
   1.150000000000000
   1.200000000000000
   1.250000000000000
   1.300000000000000
   1.350000000000000
   1.400000000000000
   1.450000000000000
   1.500000000000000
   1.550000000000000
   1.600000000000000
   1.650000000000000
   1.700000000000000
   1.750000000000000
   1.800000000000000
   1.850000000000000
   1.900000000000000
   1.950000000000000
   2.000000000000000
   2.050000000000000
   2.100000000000000
   2.150000000000000
   2.200000000000000
   2.250000000000000
   2.300000000000000
   2.350000000000000
   2.400000000000000
   2.450000000000000
   2.500000000000000
   2.550000000000000
   2.600000000000000
   2.650000000000000
   2.700000000000000
   2.731500000000000
   2.750000000000000
   2.800000000000000
   2.850000000000000
   2.900000000000000
   2.950000000000000
   3.000000000000000
   3.050000000000000
   3.100000000000000
   3.150000000000000
   3.200000000000000
   3.250000000000000
   3.300000000000000
   3.350000000000000
   3.400000000000000
   3.450000000000000
   3.500000000000000
   3.550000000000000
   3.600000000000000
   3.650000000000000
   3.700000000000000
   3.750000000000000
   3.800000000000000
   3.850000000000000
   3.900000000000000
   3.950000000000000
   4.000000000000000
   4.050000000000000
   4.100000000000000
   4.150000000000000
   4.200000000000000
   4.250000000000000
   4.300000000000000
   4.350000000000000
   4.400000000000000
   4.450000000000000
   4.500000000000000
   4.550000000000000
   4.600000000000000
   4.650000000000000
   4.700000000000000
   4.750000000000000
   4.800000000000000
   4.850000000000000
   4.900000000000000
   4.950000000000000
   5.000000000000000];

VV=   [1.644290000000000
   1.642990000000000
   1.641570000000000
   1.640030000000000
   1.638370000000000
   1.636600000000000
   1.634720000000000
   1.632740000000000
   1.630670000000000
   1.628520000000000
   1.626290000000000
   1.624000000000000
   1.621660000000000
   1.619280000000000
   1.616870000000000
   1.614450000000000
   1.612000000000000
   1.609510000000000
   1.606970000000000
   1.604380000000000
   1.601730000000000
   1.599020000000000
   1.596260000000000
   1.593440000000000
   1.590570000000000
   1.587640000000000
   1.584650000000000
   1.578480000000000
   1.572020000000000
   1.565330000000000
   1.558450000000000
   1.551450000000000
   1.544360000000000
   1.537210000000000
   1.530000000000000
   1.522730000000000
   1.515410000000000
   1.496980000000000
   1.478680000000000
   1.460860000000000
   1.443740000000000
   1.427470000000000
   1.412070000000000
   1.397510000000000
   1.383730000000000
   1.370650000000000
   1.358200000000000
   1.346320000000000
   1.334990000000000
   1.324160000000000
   1.313810000000000
   1.303900000000000
   1.294390000000000
   1.285260000000000
   1.276450000000000
   1.267940000000000
   1.259670000000000
   1.251610000000000
   1.243720000000000
   1.235960000000000
   1.228300000000000
   1.220700000000000
   1.213110000000000
   1.205480000000000
   1.197748000000000
   1.181548000000000
   1.162797000000000
   1.140817000000000
   1.125923000000000
   1.119448000000000
   1.115658000000000
   1.112810000000000
   1.110421000000000
   1.108261000000000
   1.106244000000000
   1.104324000000000
   1.102476000000000
   1.100681000000000
   1.098930000000000
   1.097216000000000
   1.095534000000000
   1.093878000000000
   1.092244000000000
   1.090627000000000
   1.089024000000000
   1.085842000000000
   1.082669000000000
   1.079492000000000
   1.076303000000000
   1.073099000000000
   1.069881000000000
   1.066650000000000
   1.063403000000000
   1.060141000000000
   1.056862000000000
   1.048584000000000
   1.040183000000000
   1.031651000000000
   1.027594000000000
   1.022984000000000
   1.014181000000000
   1.005244000000000
   0.996174000000000
   0.986974000000000
   0.977650000000000
   0.968209000000000
   0.958657000000000
   0.949000000000000
   0.939242000000000
   0.929390000000000
   0.919446000000000
   0.909416000000000
   0.899304000000000
   0.889114000000000
   0.878851000000000
   0.868518000000000
   0.858120000000000
   0.847659000000000
   0.837138000000000
   0.826560000000000
   0.815928000000000
   0.805242000000000
   0.794505000000000
   0.783720000000000
   0.772886000000000
   0.762007000000000
   0.751082000000000
   0.740115000000000
   0.729105000000000
   0.718054000000000
   0.706964000000000
   0.695834000000000
   0.684667000000000
   0.673462000000000
   0.662223000000000
   0.650949000000000
   0.639641000000000
   0.628302000000000
   0.621141000000000
   0.616930000000000
   0.605528000000000
   0.594097000000000
   0.582637000000000
   0.571151000000000
   0.559639000000000
   0.548102000000000
   0.536542000000000
   0.524961000000000
   0.513361000000000
   0.501744000000000
   0.490106000000000
   0.478442000000000
   0.466760000000000
   0.455067000000000
   0.443371000000000
   0.431670000000000
   0.419960000000000
   0.408237000000000
   0.396503000000000
   0.384757000000000
   0.373002000000000
   0.361235000000000
   0.349453000000000
   0.337654000000000
   0.325839000000000
   0.314008000000000
   0.302161000000000
   0.290298000000000
   0.278416000000000
   0.266514000000000
   0.254592000000000
   0.242653000000000
   0.230697000000000
   0.218730000000000
   0.206758000000000
   0.194789000000000
   0.182832000000000
   0.170901000000000
   0.159010000000000
   0.147191000000000
   0.135480000000000
   0.123915000000000
   0.112553000000000
   0.101454000000000
   0.090681000000000];


tnow = spline(VV, TT, voltages);