This multi-series line chart visualizes the number of comments and emojis posted per second in a Twitch chat during a DOTA 2 broadcast, with the two time-series distinguished by color. Built with D3 v4 and rendered as SVG, the chart uses a time-scaled x-axis and linear y-axis to show count values over a roughly three-minute interval. Each series is drawn as a smooth basis-curved line, with a categorical color scale assigning hues to “Comment_Count” and “Emoji_Count.” The y-axis is labeled “Count,” and the x-axis displays time in HH:MM:SS format. The visualization is based on TSV data and is a fork of mbostock’s Multi-Series Line Chart block, adapted here with Twitch chat data from a Dota 2 broadcast.