Conversion Factors for sensor values

Conversion factors for sensors (NOTE: this table provides the coefficients a and b for the linear conversion equation y=ax+b, where x is the raw sensor reading and y is the reading translated into real-world units):

+--------------+---------------------------------+-----------------+-------------------+------+-----------+-----------+

quantity	description	conversion_type	a	b	chart_min	chart_max
bat	Battery voltage (V)	linear	0.003060217176703	0	0	5
temp	Temperature (analog sensor, F)	linear	0.07506	32	40	90
digital_temp	Temperature (digital sensor, F)	linear	0.18	32	40	90
light	Incident Illumination (lumens)	linear	-1	1024	0	1024
humidity	Relative Humidity (%)	linear	1	0	0	100
pressure	Barometric Pressure (in. Hg)	linear	0.000295780903035	0	28	31
acc_x	Acceleration - X (ft / sec^2)	linear	1	0	0	50
acc_y	Acceleration - Y (ft / sec^2)	linear	1	0	0	50
acc_z	Acceleration - Z (ft / sec^2)	linear	1	0	0	50
audio_p2p	Audio Level (relative)	linear	1	0	0	100
motion	Motion Detected (binary)	threshhold	950	0	0	1

+--------------+---------------------------------+-----------------+-------------------+------+-----------+-----------+