clean up calibration code, now with correct mathematical operations to iteratively update intercept slope and temperature coefficients
clean up calibration code, now with correct mathematical operations to iteratively update intercept slope and temperature coefficients

aidendoherty/biobankAccelerometerAnalysis,computationalEpidemiology/biobankAccelerometerAnalysis,computationalEpidemiology/biobankAccelerometerAnalysis,aidendoherty/biobankAccelerometerAnalysis