Audiogram An audiogram is a graph that shows the audible threshold for standardized frequencies as measured by an audiometer. The Y axis represents intensity measured in decibels and the X axis represents frequency measured in hertz. The threshold of hearing is plotted relative to a standardised curve that represents 'normal' hearing, in dB(HL).
Test every 12 hours not every 24 hours. The perfect time for sexual intercourse is within 12-24 hours prior to the ovulation predictor FIRST turning positive. Especially if you test only once a day. This may sound like a surprise, but making love only after first getting a positive OPK may not get you pregnant at all.
Your best bet is probably to use an ovulation predictor test. If you've never tried an ovulation predictor test (or OPK, ovulation predictor kit), they work a lot like pregnancy tests. You pee on a stick, and the test will indicate whether you're in your fertile window or not. You can start taking the OPKs the day after you finish your Clomid pills.