Final answer:
Without clear context, an 'order let' can refer to either a data-related graphical element in charts, such as accumulated values or sorting order in Pareto charts, or it could mistakenly refer to architectural styles such as the Doric and Ionic orders. Additional information is needed to provide an accurate description.
Step-by-step explanation:
It seems there might be some confusion in the question about what an 'order let' refers to. Based on the information provided it appears the question may refer to either graphical representations of data or architectural features. For clarification:
- If the context is about data visualization, an 'order let' in a right chart panel could refer to the final cumulative values in comparison charts or the sorting order in a Pareto chart. Moreover, there's mention of comparing areas under curves, suggesting a focus on interpretation of graphical data related to gas trends.
- However if the context is architectural, 'order let' could be a typo or confusion with the term 'order,' which in architecture refers to styles such as Doric and Ionic orders. An illustration or diagram in the right chart panel might show different elements like the frieze, metope, and triglyph for the Doric order.
Without a clear indication of the content loaded into the 'right chart panel', providing an accurate graphic analysis remains a challenge. Therefore a direct visual reference or additional context would be necessary to provide an exact description of an 'order let' in the right chart panel.