A computer-implemented method and apparatus for providing data locality in a serialized object stream. During initial calibration, the analyte sensor data is evaluated over a period of time to determine stability of the sensor. An additional aspect of the invention provides a method andor process for storing and utilizing web-based cookies on a cloud environment for service providers. The first conductor is electrically connected to the negative electrode and the second conductor is electrically connected to the positive electrode so that the diode is electrically connected in parallel with the solar cell panel. A plurality of the light guide bodies are laminated so as to be at least partially overlapped at the respective light emitting regions of the light guide bodies, and the control unit allows the intensity of light made incident from the light sources to the light guide bodies to change with the lapse of time.