code: function calculateLux(data)
  {
  	// Get 16 bit value from data buffer in little endian format.
  	var value = data.getUint16(0, true)
  
  	// Extraction of luxometer value, based on sfloatExp2ToDouble
  	// from BLEUtility.m in Texas Instruments TI BLE SensorTag
  	// iOS app source code.
  	var mantissa = value & 0x0FFF
  	var exponent = value >> 12
  
  	var magnitude = Math.pow(2, exponent)
  	var output = (mantissa * magnitude)
  
  	var lux = output / 100.0
  
  	// Return result.
  	return lux
  }
docs: Calculate the light level from raw sensor data. Return light level in lux.