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Indicator Gauge Icon Legend
Legend Colors
Red is bad, green is good, blue is not statistically different/neutral.
Compared to Distribution
the value is in the best half of communities.
the value is in the 2nd worst quarter of communities.
the value is in the worst quarter of communities.
Compared to Target
meets target; 
does not meet target.
Compared to a Single Value
lower than the comparison value;
higher than the comparison value;
not statistically different from comparison value.
Trend
non-significant change over time; 
significant change over time; 
no change over time.
Compared to Prior Value
higher than the previous measurement period;
lower than the previous measurement period;
no statistically different change from previous measurement period.
County: Arlington
Environmental Health / Toxins & Contaminants
Value
Compared to:
County: Arlington PBT Released
County: Arlington PBT Released
162
Pounds
(2022)
Compared to:
Prior Value
(161)
Prior Value compares a measured value with the previously measured value. Confidence intervals were not taken into account in determining the direction of the comparison.
Trend
This comparison measures the indicator’s values over multiple time periods.<br>The Mann-Kendall Test for Statistical Significance is used to evaluate the trend<br>over 4 to 10 periods of measure, subject to data availability and comparability.
County: Arlington
Environmental Health / Weather & Climate
Value
Compared to:
County: Arlington Daily Dose of UV Irradiance
County: Arlington Daily Dose of UV Irradiance
3,546
Joule per square meter
(2020)
Compared to:
VA Counties
The distribution is based on data from 112 Virginia counties and county equivalents.
VA Value
(3,937)
The regional value is compared to the Virginia State value.
Prior Value
(3,727)
Prior Value compares a measured value with the previously measured value. Confidence intervals were not taken into account in determining the direction of the comparison.
Trend
This comparison measures the indicator’s values over multiple time periods.<br>The Mann-Kendall Test for Statistical Significance is used to evaluate the trend<br>over 4 to 10 periods of measure, subject to data availability and comparability.
County: Arlington Number of Extreme Heat Days
County: Arlington Number of Extreme Heat Days
18
Days
(2022)
Compared to:
Prior Value
(22)
Prior Value compares a measured value with the previously measured value. Confidence intervals were not taken into account in determining the direction of the comparison.
Trend
This comparison measures the indicator’s values over multiple time periods.<br>The Mann-Kendall Test for Statistical Significance is used to evaluate the trend<br>over 4 to 10 periods of measure, subject to data availability and comparability.
County: Arlington Number of Extreme Heat Events
County: Arlington Number of Extreme Heat Events
17
Events
(2023)
Compared to:
Prior Value
(14)
Prior Value compares a measured value with the previously measured value. Confidence intervals were not taken into account in determining the direction of the comparison.
Trend
This comparison measures the indicator’s values over multiple time periods.<br>The Mann-Kendall Test for Statistical Significance is used to evaluate the trend<br>over 4 to 10 periods of measure, subject to data availability and comparability.
County: Arlington Number of Extreme Precipitation Days
County: Arlington Number of Extreme Precipitation Days
0
Days
(2023)
Compared to:
Prior Value
(25)
Prior Value compares a measured value with the previously measured value. Confidence intervals were not taken into account in determining the direction of the comparison.
Trend
This comparison measures the indicator’s values over multiple time periods.<br>The Mann-Kendall Test for Statistical Significance is used to evaluate the trend<br>over 4 to 10 periods of measure, subject to data availability and comparability.
County: Arlington Weeks of Moderate Drought or Worse
County: Arlington Weeks of Moderate Drought or Worse
0
Weeks per year
(2021)
Compared to:
Prior Value
Prior Value compares a measured value with the previously measured value. Confidence intervals were not taken into account in determining the direction of the comparison.
Trend
This comparison measures the indicator’s values over multiple time periods.<br>The Mann-Kendall Test for Statistical Significance is used to evaluate the trend<br>over 4 to 10 periods of measure, subject to data availability and comparability.
