Rick, If you are using Calendar Heat Map to display gasline price ,that would better . It could also discover season and week effect. https://blogs.sas.com/content/graphicallyspeaking/2011/12/08/calendar-heatmaps-in-gtl/ https://blogs.sas.com/content/graphicallyspeaking/2021/09/02/cary-nc-data-weather/