Speed of sound in air is directly proportional to the square root of absolute temperature of air, keeping other parameters constant. The speed of sound in air at $$273\,\text{K}$$ and $$1\,\text{atm}$$ is $$332\,\text{m s}^{-1}$$. On a clear day, when temperature in the laboratory was $$27^\circ\text{C}$$, an experiment was performed to measure speed of sound in air. The measured value comes out to be $$352\,\text{m s}^{-1}$$. The percentage error in this measurement is