The government has revised upward the June reading for the key gauge of the current state of Japan's economy from 77.8 percent to 80 percent, the Cabinet Office said Friday.

The revised reading of the coincident index confirms that the gauge topped the boom-or-bust line of 50 percent for five months through June, the Cabinet Office said in an update of preliminary figures.

A reading below 50 percent is viewed as a sign of economic contraction, while a figure above this line is viewed as a sign of expansion.

The government has also revised upward the index of leading indicators, which measures economic growth six months ahead, from 70 percent to 72.2 percent, topping the 50 percent line for the sixth straight month.

The index of lagging indicators, which gauges economic performance in the recent past, was left unchanged at 50 percent.

The diffusion indexes of the coincident, leading and lagging indicators compare the current levels of various economic indicators with their levels three months earlier.