Average horizontal illuminance lux
average_horizontal_illuminance_lux
Average horizontal illuminance
Scores if within ±3% of the reference value.
Calculates reduced sports lighting performance using aggregate luminaire flux, utilisation factor, maintenance factor, and grid extrema. The template reports average horizontal illuminance, U1 and U2 uniformity ratios, and margins against target lighting class values.
with-tool: The model is given an executable Python calculator script.
One template produces many comparable benchmark tasks while keeping the scoring contract fixed.
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The reusable contract shown on this page.
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An archetype and site context are sampled.
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Inputs may be hidden at harder tiers.
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The model responds with the declared outputs.
Inputs the model receives, and the outputs it is scored on.
10 inputs
Included directly in every task prompt.
Field length
field_length_m
Sports field length
Field width
field_width_m
Sports field width
Luminaire
luminaire_count
Number of luminaires
Luminaire luminous flux
luminaire_luminous_flux_lm
Luminous flux per luminaire
Utilisation factor
utilisation_factor
Field utilisation factor
Maintenance factor
maintenance_factor
Lighting maintenance factor
Minimum illuminance
minimum_illuminance_lux
Minimum grid illuminance
Maximum illuminance
maximum_illuminance_lux
Maximum grid illuminance
Target average illuminance
target_average_illuminance_lux
Target average horizontal illuminance
Visible in easier tasks and withheld in one or more harder tiers.
Target uniformity u2
target_uniformity_u2
Target U2 uniformity ratio
Hidden at hard difficulty.
5 outputs
average_horizontal_illuminance_lux
Average horizontal illuminance
Scores if within ±3% of the reference value.
uniformity_u1_min_max
U1 uniformity ratio, minimum divided by maximum
Scores if within ±3% of the reference value.
uniformity_u2_min_avg
U2 uniformity ratio, minimum divided by average
Scores if within ±3% of the reference value.
average_illuminance_margin_pct
Average illuminance margin against target
Scores if within ±3% of the reference value.
uniformity_u2_margin_pct
U2 uniformity margin against target
Scores if within ±3% of the reference value.
Each template is sampled at three tiers. Harder tiers may hide inputs, forcing the model to infer them from the scenario description.
All inputs given
Community sports field with all values visible
All inputs given
Sports lighting case selected from community or stadium fields
Some inputs hidden
Stadium field with target U2 embedded in context
Hidden inputs
Prompt replacement text
Use the target U2 uniformity implied by {{ archetype.description }}.
Target uniformity u2 restricted to: 0.7
The exact instruction and parameter contract used to generate this task, pinned to the published library source.
/workspace
Teal lines show Jinja input conditions, not task visibility policy. A line renders only when that input or tool is visible.
1# ABOUTME: Prompt template for sports field illuminance uniformity tasks.2# ABOUTME: Presents field, luminaire, utilisation, maintenance, and grid values.3 4You are a senior sports lighting engineer checking horizontal illuminance and uniformity.5 6## Given7 8| Parameter | Value | Unit |9|-----------|-------|------|10| Field length | {{ field_length_m }} | m |11| Field width | {{ field_width_m }} | m |12| Luminaire count | {{ luminaire_count }} | count |13| Luminaire luminous flux | {{ luminaire_luminous_flux_lm }} | lm |14| Utilisation factor | {{ utilisation_factor }} | - |15| Maintenance factor | {{ maintenance_factor }} | - |16| Minimum illuminance | {{ minimum_illuminance_lux }} | lux |17| Maximum illuminance | {{ maximum_illuminance_lux }} | lux |18| Target average illuminance | {{ target_average_illuminance_lux }} | lux |19| Target U2 uniformity | {{ target_uniformity_u2 }} | - |20 21## Constraints22 23- Field area equals length times width.24- Average horizontal illuminance equals total luminaire lumens times utilisation factor times maintenance factor divided by field area.25- U1 equals minimum illuminance divided by maximum illuminance.26- U2 equals minimum illuminance divided by average horizontal illuminance.27- Margins are percentage differences from the target average illuminance and target U2.28 29## Output Format30 31Include a JSON block with exactly these keys:32 33```json34{35 "average_horizontal_illuminance_lux": <numeric_value>,36 "uniformity_u1_min_max": <numeric_value>,37 "uniformity_u2_min_avg": <numeric_value>,38 "average_illuminance_margin_pct": <numeric_value>,39 "uniformity_u2_margin_pct": <numeric_value>40}41```42 43Write your complete solution to `/workspace/output.md`.44 Each generated task is drawn from one of these realistic scenario bands.
Site contexts ground each scenario in a real locale the model can use to infer hidden values.
community_field
Community sports field lighting
stadium_field
Stadium field lighting
stadium-stadium-field-preview — hard difficulty, some inputs hidden.
Stadium field lighting. stadium. Required outputs: average_horizontal_illuminance_lux, uniformity_u1_min_max, uniformity_u2_min_avg, average_illuminance_margin_pct, uniformity_u2_margin_pct
Scenario context and visible inputs.
Executable tool: sports-illuminance-uniformity_calc.py
Inputs withheld at this difficulty.
Target uniformity u2
target_uniformity_u2
Stand-in text in the prompt
Use the target U2 uniformity implied by {{ archetype.description }}.
The scored JSON answer schema.
{
"average_horizontal_illuminance_lux": <number>,
"uniformity_u1_min_max": <number>,
"uniformity_u2_min_avg": <number>,
"average_illuminance_margin_pct": <number>,
"uniformity_u2_margin_pct": <number>
}