Typical 6.7 GHz light curve for the 2.87 km s⁻¹ spectral channel of S255-NIRS3. The green line denotes the estimated background (b) flux level, while the blue and red lines indicate variations above the background by 3σ and 5σ, respectively.The symbols in the legend indicate the start of the burst, the data point triggering the burst, the first and second peaks of the burst, and the dip of the light curve.