This visualization shows monthly effective rainfall measurements over time as a histogram of steelblue bars. The chart maps dates on a time-scaled x-axis and rainfall values on a linear y-axis, using D3 v5’s `scaleTime`, `scaleLinear`, and `axisBottom`/`axisRight` APIs. SVG rectangles are bound to data from a CSV dataset, with each bar’s height determined by the `EffectiveRainfall` value. The code loads the external CSV via `d3.csv` and parses dates with `timeParse` before rendering.