I'd like to calculate the compass bearings but I have an interogation on what is LSB data and how to find it with my phidget spatial 3/3/3 basic

This is an exemple I found on how to use a magnetometer to calculate the compass headings. If you could help me on the LSB thing it would really help.

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Calculate the real Gauss value for the X and Y axes from the amount of LSBs returned where the LSB value by default is 0.48828125 mG, resulting in 2048 LSBs per Gauss.

xGaussData = xDataLSB∗0.48828125 mG

yGaussData = yDataLSB∗0.48828125 mG

Calculate the direction D by first checking to see if the X Gauss data is equal to 0 to prevent divide by 0 zero errors in the future calculations. If the X Gauss data is 0, check to see if the Y Gauss data is less than 0. If Y is less than 0 Gauss, the direction D is 90 degrees; if Y is greater than or equal to 0 Gauss, the direction D is 0 degrees.

If the X Gauss data is not zero, calculate the arctangent of the Y Gauss and X Gauss data and convert from polar coordinates to degrees.

D = arctan(yGaussData/xGaussData)∗(180/π)

If the direction D is greater than 360 degrees, subtract 360 degrees from that value.

If the direction D is less than 0 degrees, add 360 degrees to that value.

The compass heading can then be determined by the direction value D:

If D is greater than 337.25 degrees or less than 22.5 degrees – North

If D is between 292.5 degrees and 337.25 degrees – North-West

If D is between 247.5 degrees and 292.5 degrees – West

If D is between 202.5 degrees and 247.5 degrees – South-West

If D is between 157.5 degrees and 202.5 degrees – South

If D is between 112.5 degrees and 157.5 degrees – South-East

If D is between 67.5 degrees and 112.5 degrees – East

If D is between 0 degrees and 67.5 degrees – North-East