The MACD is calculated by simply subtracting a 26-period exponential moving average (EMA) of the closing prices from a 12-period EMA. The signal line is a nine-period exponential moving average of the MACD.

FORBES: Demystifying the MACD

Per the tables below, we found it of interest that, in the one-month and three-month returns following such a signal, the average positive returns were higher than the at-any-time returns, while the average loss was smaller than the at-any-time average loss.

FORBES: Don't Sell This May

If the bulls were able to rally above the 20-day moving average early this week it would be a short-term bullish signal and would suggest a minor bottom could be in the works.

FORBES: Technical Trading: "Spike Low" Offers Important Short-Term Support, Gold Stabilizes

Gold is 72% above its 10-year moving average, a strong inflation signal.

FORBES: Did Ben Go Wobbly?

Very short-term, the April gold contract has climbed above its 20-day moving average, which is a minor bullish technical signal.

FORBES: Technical Trading: Gold Jumps On Cyprus Bailout Jitters

Overnight action saw the December Comex gold futures contract push through short-term resistance from the 20-day moving average, which is a minor near term bullish technical signal.

FORBES: Technical Trading: Air Strikes, BOJ Easing Hopes Keep Short-Term Pattern Bullish For Gold

The rise and fall of signal strength in each "link" - the path from one mast to another - provides an average measure of how much rain there is between them.

BBC: Rain tracked with mobile network