An incandescent light bulb operated for two hours per day uses $12.2 \: \text{kWh}$ of energy per month. Burning of one kg of coal generates $2 \: \text{kWh}$ of electrical energy and releases $7 \: g$ of $\mathrm{PM}_{10}$. The reduction in $\mathrm{PM}_{10}$ emitted per month, if this incandescent bulb is replaced with a light emitting diode (LED) bulb which consumes $1 / 6^{\text {th }}$ of energy, is $\_\_\_\_\_ \: g$. (rounded off to one decimal place)
