Time series of the longitudinal gradient of Venus's brightness temperature measured by Akatsuki LIR

<p>The files contain the time series of the longitudinal gradient of Venusian cloud&#39;s brightness temperature measured by LIR onboard JAXA&#39;s Venus orbiter Akatsuki. The data were derived and analyzed in the paper &quot;Planetary-Scale Waves Seen in Thermal Infrared Images of Venusian Cloud Top&quot; by Kajiwara et al. The filename represents the latitude for each time series (For example, &quot;10N&quot; means 10 degrees north, and &quot;EQ&quot; means the equator). In all files, the first column gives the approximate elapsed time in days from 18 May 2017: the exact dates are given in the paper.&nbsp; The second column gives the longitudinal gradient of the brightness temperature in unit of K/degree.</p>