> For the complete documentation index, see [llms.txt](https://docs.unisphere.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.unisphere.io/operational-analytics/analysis-results/wind-analysis-results-interpretation.md).

# Wind Analysis: Results Interpretation

## Wind Roses

Wind rose charts provide an effective way to represent wind speed and direction in a single diagram. They are created both in high-level and detailed analyses on a monthly basis, as well as in an annual summary, but do not display wind conditions by the hour.

<figure><img src="/files/YoTmN8ouOewckgKFQvrS" alt="" width="375"><figcaption></figcaption></figure>

<details>

<summary>Structure</summary>

**Calm Sector:**\
The central circle of the wind rose, often referred to as the "calm sector," indicates the percentage of time (e.g., 39%) during which no wind or only minimal wind movement was recorded.

**Wind Directions:**\
The wind rose diagram is divided into 16 segments, each representing a wind direction of 22.5°. Below is a description of the wind directions:

* **0° - N (North):**\
  -> Short bar, low wind frequency, primarily low wind speeds (3-6 knots)
* **22.5° - NNE (North-Northeast):**\
  -> Very short bar, almost no wind from this direction
* **45° - NE (Northeast):**\
  -> Barely any wind from this direction; the bar is almost invisible
* **67.5° - ENE (East-Northeast):**\
  -> Similar to NE, no significant wind frequency
* **90° - E (East):**\
  -> Slightly visible bar, low wind frequency (3-6 knots)
* **112.5° - ESE (East-Southeast):**\
  -> Almost no wind from this direction, very short bar
* **135° - SE (Southeast):**\
  -> Nearly no wind from this direction; bar is minimal
* **157.5° - SSE (South-Southeast):**\
  \- > Very short bars, minimal wind activity
* **180° - S (South):**\
  -> Few winds from this direction; bars visible for 3-6 knots
* **202.5° - SSW (South-Southwest):**\
  -> Slight activity, dominated by low wind speeds
* **225° - SW (Southwest):**\
  -> One of the dominant wind directions; longer bars with various speed ranges (up to 15-20 knots)
* **247.5° - WSW (West-Southwest):**\
  -> Noticeable activity, primarily low to moderate wind speeds (6-15 knots)
* **270° - W (West):**\
  -> Dominant direction, longer bars, with a concentration of 6-15 knots and some stronger winds
* **292.5° - WNW (West-Northwest):**\
  -> Significant wind frequency, bars with moderate speeds (up to 10-15 knots)
* **315° - NW (Northwest):**\
  -> Less wind from this direction, mainly low speeds (3-6 knots)
* **337.5° - NNW (North-Northwest):**\
  -> Low wind frequency, visible bars for low wind speeds

**Wind Speed:**\
The wind intensity is illustrated by the color of the bars. Different colors represent various wind speed ranges:

* Light gray: 3–6 knots
* Dark gray: 6–10 knots
* Light blue: 10–15 knots
* Dark blue: 15–20 knots
* Red: More than 20 knots

**Percentage Frequency:**\
The length of the bars represents the percentage of time the wind came from a specific direction. Longer bars indicate higher frequency

**Analysis Details:**

* The location is displayed above the diagram, along with the height at which the wind analysis was conducted
* The analysis period is shown at the bottom right, along with the coordinates of the analysis location

</details>

The wind rose overview is part of the analysis and, includes all monthly wind rose evaluations displayed together on a single page. The structure of the individual wind roses remains unchanged.

<figure><img src="/files/oHiTVGwLiYTh1udy3Uw6" alt="" width="375"><figcaption></figcaption></figure>

## Heatmaps

{% hint style="info" %}
Only available for detailed analyses.
{% endhint %}

The heatmaps display the average hourly wind conditions for the corresponding time frame. In this case, they summarize a one-year period and visualize the composition of wind speed and direction.

<div><figure><img src="/files/q6zXKuZIJFj1gXBUF0mq" alt="" width="375"><figcaption></figcaption></figure> <figure><img src="/files/0Efm6JecfVlw4G4xXr8S" alt="" width="375"><figcaption></figcaption></figure></div>

<details>

<summary>Structure</summary>

**Y-Axis:** The Y-axis represents the percentage of time during which the wind speed/direction fell within a specific speed/direction range.

**Speed Bins:**

* 0–3 knots (light gray)
* 3–6 knots (medium gray)
* 6–10 knots (dark gray)
* 10–15 knots (blue)
* 15–20 knots (dark blue)
* 20+ knots (red)

**Direction Bins:**

* 0° to 330° (in 30° increments)
* Colors vary to clearly differentiate the individual directions, e.g.:
  * 0° (North) in blue
  * 90° (East) in green
  * 180° (South) in red
  * 270° (West) in brown

**X-Axis (Hours in UTC):** Displays the hours of the day (in UTC) from 0 to 23.

**Analysis Details:** The analysis location, time period, and the considered time of day are noted at the bottom of the diagram.

</details>

In addition to the annual evaluations, monthly evaluations are created. You will also receive a summary that displays all monthly evaluations, allowing you to quickly gain an overview.

<div><figure><img src="/files/tOaNZaO5wuTUDUWRWHID" alt="" width="375"><figcaption></figcaption></figure> <figure><img src="/files/B4q7Kv6mVoeqc0I69iqS" alt="" width="375"><figcaption></figcaption></figure></div>