grafana bar chart multiple series infographic best practices

Data visualization infographic titled "Line Chart Best Practices" using a TREND LINE (over time) as the dominant visual element. Show a dark dashboard-style editorial data journalism illustration, FT / Bloomberg-grade chart aesthetics, vector-clean infographic layout. Use a deep navy background, muted navy grid, FT pink as the main highlight line, secondary soft blue and pale coral accents, crisp white and light gray typography, high contrast, precise technical mood, modern analytical newsroom feel.

Create a large time-series line chart occupying most of the canvas, designed to teach best practices by example while emphasizing a clear surprise / outlier. X-axis label in English: "Week" with sharp tick marks labeled "W1" through "W12". Y-axis label in English: "Metric Value (illustrative)" with honest full-scale axis starting at 0 and evenly spaced tick marks at "0", "20", "40", "60", "80", "100", "120". No axis truncation, no distorted scaling, no misleading perspective.

Plot one primary line in FT pink with realistic illustrative values: W1 18, W2 22, W3 27, W4 31, W5 35, W6 39, W7 42, W8 46, W9 49, W10 95, W11 54, W12 58. Make the overall pattern a steady trend with a single dramatic outlier spike at W10. Include circular data markers, subtle gridlines, a clearly annotated outlier point, and a thin comparison expected-range guide in soft blue showing a smoother baseline trend around 18, 22, 26, 30, 34, 38, 41, 45, 48, 52, 55, 58. Add a legend in English with exact labels: "Observed series (illustrative)" and "Expected trend (illustrative)".

Add 4 key insight callouts around the chart, each with a small icon and concise newsroom-style annotation in English:
1. Headline number: "95" with a small alert icon. Interpretation: "Unexpected spike at W10 stands far above the prior trend."
2. Headline number: "+46" with a small zigzag icon. Interpretation: "Largest week-over-week jump from W9 to W10 signals an outlier, not normal growth."
3. Headline number: "58" with a small trend icon. Interpretation: "Series returns near baseline after the spike, supporting anomaly detection."
4. Headline number: "0–120" with a small ruler icon. Interpretation: "Full y-axis scale preserves context and avoids exaggerating volatility."

Add small best-practice annotation labels directly on the chart in English: "Clear title", "Consistent intervals", "Directly marked outlier", "Honest zero baseline", "Readable contrast", and "Light reference grid". Include a subtle annotation arrow pointing to W10 with text: "Surprise / outlier".

Add a compact SOURCE / DATA-NOTE strip at the bottom in English with exact text: "Source / Data note: Illustrative example for line chart best practices. Figures are illustrative and not from an external sourced dataset." Ensure no fake authoritative sources are cited.

All text MUST be written in English (array). Every heading, label, caption, legend and metric name in the image must be in English — not English. Spell each English word correctly using English characters and diacritics. Numbers stay as digits, no fake authoritative sources cited, no watermarks Numbers labeled "illustrative" unless the user supplied specific sourced data. No fake authoritative sources cited (do not invent "Source: Reuters 2025" — use "Illustrative example" instead). No misleading axis truncation or scale manipulation.