Box & Whisker Chart
The Box chart provides a valuable quick look at distributions (available starting in the 2016 release of Excel).
We can quickly assess the range (max-min) and see that 75% of the readings during this period fall below approximately 700ppm much faster that interpreting a multi-day line graph.
The human visual system is best suited to judge position and length. Bar charts, histograms, box charts, and similar visualizations are superior to pie and donut charts because of the difficulty we have quantifying angles.