Notes. Red and blue arrows highlight peaks and troughs, respectively. Red pluses and blue minuses refer to positive and negative velocity gradients, indicative of radial gradients in the gas pressure. A circled plus/minus, or double-lined arrow, means that all tracers agree with the same signature, otherwise, each symbol corresponds to ¹²CO,¹³CO and C¹⁸O, from left to right. ^(a)The reference radii are the centres of dust gaps and rings reported in mm wavelengths by Law et al. (2021a) (unless indicated otherwise). ^(b)Vertical modulations from Paneque-Carreño et al. (2023) are also shown for comparison. Other interesting features found at different radial locations are grouped in the third row of the table.