Use your solar power meter to measure the amperage or current (or, voltage, if your meter can't measure electrical current) from the sun. This measurement should vary throughout the day. Does it? Make a solar power sample every hour and record the meter's current setting. Plot the results for these hourly readings on a graph with the current or amperage reading on the vertical y-axis and the day's hour on the horizontal x-axis. Record a week or month's worth of daily solar power readings. Compare your readings against known atmospheric events in your neighborhood (e.g., rainy days, smoggy days, etc.). How do these atmospheric events affect the solar power readings? How do solar power readings change throughout a season? Or, throughout a year?