All functions

led_bulb()

Select a random sample of bulbs all time points.

led_histogram()

Create a histogram for bulb values.

led_linechart()

Create a time-series chart of LED bulbs.

led_study

LED example bulbs of lumen output

led_testing

LED example bulbs of lumen output for two products with standard procedure time point measurements

led_time()

Select all bulbs at the nearest time.