b'Data trends Recording the exponent numberFigure 1. Picture of KT10 screen, taken from Terraplus KT10 manual (left) and RT-1 screen taken from RT-1 manual (right)- it is important to record the exponent number- this is usually displayed as 10-3 or 10-5 (see Figure 1)- the exponent is the -3 or -5- the exponent converts the measurement to its absolute form- example: 53.9 x 10-3 = 53.9 / 1000 = 0.0539 SIExponent tips- KT series exponent defaults to -3- GMS-2 and RT-1 default to -5 but high measurements change the exponent so check each timeRecording measurements in a spreadsheet- a general layout is shown in Figure 2- Mag Sus column uses the formula Reading * (10 ^ Exponent)- type in K2 = I2 * (10 ^ J2) and copy down the columnFigure 2.Example layout of a spreadsheet. Check your results are realistic- graph the Mag Sus column as a line plot (see Figure 3)- the maximum possible value is 20 and negatives are possible- Common settings for a readable graph are- Y axis has a base 10 logarithmic scale- X axis intercepts Y axis at 0.0Figure 3.Example magnetic susceptibility plot 43 PREVIEW OCTOBER 2021'