Room for Drama
Room for DramaOutside, Actually.

London (demonstration)

The plot with nothing on it at all

DemonstrationEdit the plan

When the middle row is open for growing things

Each month read on its 30th, or the last day of a shorter month · 2026
Something growing here, through the year. The middle row cannot be read for growing things in any month yet. 0 months open, 0 shut, 12 unanswered.JanFebMarAprMayJunJulAugSepOctNovDec0months open
  • Works
  • Tight
  • No
  • Unanswered

Rings run from 6 am at the centre to 8 pm at the edge. Schematic: A shape of the facts, not a picture of a particular date or a measured outline. Each month is its 30th, or the last day of a shorter month, not a promise about the other days.

The middle row cannot be read for growing things in any month yet.

  • All year: cannot be answered, because usable light has not been recorded here.
The same year as a table
MonthOpenUsable hoursWhat decides it
January 30——Usable light closes it
February 28——Usable light closes it
March 30——Usable light closes it
April 30——Usable light closes it
May 30——Usable light closes it
June 30——Usable light closes it
July 30——Usable light closes it
August 30——Usable light closes it
September 30——Usable light closes it
October 30——Usable light closes it
November 30——Usable light closes it
December 30——Usable light closes it

The middle row for Something growing here. October 30, 2026 at 8:00 AM, Europe/London. Now on this date. Confidence medium. Cause: How long it stays wet is what stops it.

Not full sun or shade. How much usable light actually arrives across a day, and whether the spot ever dries.

Something growing here

The middle row does not work for growing things on a day like this, and how long it stays wet is why.

“No” means the model does not support this use under the conditions being read. The controlling limits are listed below.

  • Past the limit How long it stays wet is about 24h — 14h over (at most 10h)Estimate: Worked out, but at least one input was assumed rather than measured.

    An outdoor cushion soaked here in Oct would not dry before nightfall.

    Roots and foliage sitting wet kill more plants than the wrong hardiness zone does.

What would change this. This would change if how long it stays wet were measured and came out differently. The figure is an estimate, not a tape.

Confidence medium (60%). Enough to point in a direction, not enough to buy against.

What this answer was built from
Use
Something growing here
Place
The middle row
Weather
Temperate maritime, mild, grey, damp (scenario shape) (from a published source)
Method
A whole day in October, traced against the scene rather than read at one hour
Try a changeMake a document

What next here

Testing a change

3 of 8 milestones. One thing is still in the way of privacy, sightlines and screening advice.

  1. Getting an honest answer3 of 4 done
    • Placed on the earth — done. The sun is in the right part of the sky for this address.
    • A spot to read — done. 1 spot is being read.
    • What stands in the way — done. 1 things are drawn, so the shade is worked out rather than assumed.
    • Who can see in — not done. Privacy is the most common reason a terrace goes unused, and it cannot be answered without knowing which windows look at it.
  2. Testing a changeyou are here0 of 2 done
    • A change tested — not done. Testing a change before buying it is the cheapest part of the whole exercise.
    • A forecast checked — not done. A forecast nobody goes back and checks is a guess with a date on it.
  3. Proving it well enough to spend money0 of 2 done
    • Corrected against reality — not done. After a couple of rechecks the model can be corrected against this specific garden.
    • Photographed — not done. A photograph is what turns a drawing somebody sketched into a drawing somebody can check.
  1. Mark the windows that look at this spot

    Being overlooked is one of the most common reasons a good terrace goes unused, and it is the one reading here that cannot be inferred from anything else.

    a tap per windowneeded for privacy, sightlines and screening advice
  2. Get this place to Mapped

    Real shade. The difference between being told the sun is up at five and being told your table is in shadow from four. Right now: It cannot tell you when your patio is in shade, because nothing has been drawn that could cast any. What is missing: The things in the way: 1 object drawn. The house counts, and so does the neighbour's.

    one thing left
  3. Test a change before you buy anything

    The plan is good enough to ask what a screen, a tree or a canopy would actually do here — including the ones that turn out to be a waste of money.

    a few minutes, nothing bought
3 more things worth doing here
  1. Add a second spot and compare the two

    One spot gives a verdict; two give a reason. Most of what is worth learning here is why one corner works at six and the other never does.

    one tap, then read across
  2. See how this spot changes through the year

    A terrace that works in July can be unusable in September for reasons that have nothing to do with temperature. The same geometry read in four seasons is the cheapest insight here.

    a read, nothing to enter
  3. Photograph the spot and mark what is in shot

    A photograph is what separates a drawing you sketched from a drawing somebody else can check. It is also how heights get corrected without a ladder.

    one photograph

How well this place is described

Quick
  1. Quick
  2. Mapped
  3. Annotated
  4. Measured

The sun can be placed. Angles, sunrise and sunset, and the shape of the day are right, and everything that depends on what stands in the way is a guess.

It cannot tell you when your patio is in shade, because nothing has been drawn that could cast any.

To reach Mapped

  • The things in the way: 1 object drawn. The house counts, and so does the neighbour's.

What that buys: Real shade. The difference between being told the sun is up at five and being told your table is in shadow from four.

Everything that was checked
  • Quick A place on the earth: London (demonstration), with a time zone, which is what makes an hour an hour.
  • Quick Somewhere to read: 1 spot marked. A reading is a height at a place, and moving it moves the answer.
  • Mapped The things in the way: 1 object drawn. The house counts, and so does the neighbour's.
  • Mapped What is underfoot: 1 of 1 readings sit on a mapped surface.
  • Mapped Where the property ends: Drawn, so the product can tell you when the cheapest fix stands on someone else's land.
  • Annotated Photographs of the actual place: None annotated. A photograph is how a drawn height gets checked against a real one.
  • Annotated Photographs that know where they were taken from: No photograph has a position and a bearing, so what is marked on them cannot become a measurement.
  • Annotated Who can see in: Nobody marked. Privacy is a question about who sees in from where, and the product will not invent one.
  • Measured Heights off a tape: All 1 objects are marked as measured.
  • Measured Something checked against the day: Nothing has been checked against a real afternoon. The model is unopposed, which is not the same as being right.

What to measure next

Ranked by how far the answer moves, not by a checklist
  1. 1Who can actually see inSit in the chair

    Sit where you actually sit and look around. Mark the one window or path you can see a person from. Until one exists, privacy is a question we are not answering rather than one that is fine.

    This is not a refinement. Nothing can answer this question until somebody marks it.

    Mark it on the plan

    Currently assuming: nobody is overlooking this. Tested across one confirmed observer changes the whole privacy answer.

  2. 2What you are looking atSit in the chair

    Mark the direction of the view worth keeping. No view has been marked yet, so nothing weighs what the view is worth, and a screen that blocks it looks free.

    This is not a refinement. Nothing can answer this question until somebody marks it.

    Mark it on the plan

    Currently assuming: no view is being protected. Tested across one corridor changes what screening is worth doing.

Drawn
Worked out
The plotThe shed7 ft 3 inThe middle row912159° upN16 ft
BuildingNot yours (dashed edge)CanopyShadow nowSun’s path today (schematic)Can see inProposed

To scale · to the measurements given: Drawn to scale from the measurements given. Not a survey. It is not a survey.

Reading at

8:00 AM·October

In the sun. The sun is 9° up.

October 30 · The middle row Schematic: A shape of the facts, not a picture of a particular date or a measured outline.

The sun reaches the middle row at 6:52 AM. The middle row loses the sun at 3:10 PM because of the shed. The middle row comes back into the sun at 3:22 PM, once the shed is no longer in the way. The middle row loses the sun at 4:35 PM.

The same day as a table
The same day hour by hour, in text.
HourSunVerdictConfidenceSun position
12:00 AMdark——
3:00 AMdark——
6:00 AMdark——
7:00 AMin sun——1° up, bearing 113°
8:00 AMin sun——9° up, bearing 125°
9:00 AMin sun——16° up, bearing 139°
10:00 AMin sun——21° up, bearing 153°
11:00 AMin sun——24° up, bearing 168°
12:00 PMin sun——25° up, bearing 184°
1:00 PMin sun——23° up, bearing 200°
2:00 PMin sun——18° up, bearing 215°
3:00 PMin sun——12° up, bearing 228°
4:00 PMin sun——5° up, bearing 241°
6:00 PMdark——
9:00 PMdark——
When the sun arrives and leaves, to the minute.
WhenWhat happens
6:52 AMThe sun reaches the middle row at 6:52 AM.
3:10 PMThe middle row loses the sun at 3:10 PM because of the shed.
3:22 PMThe middle row comes back into the sun at 3:22 PM, once the shed is no longer in the way.
4:35 PMThe middle row loses the sun at 4:35 PM.

Direct sun at the middle row, month by month

Schematic · computed: Computed from this place's own plan and climate, then drawn as a shape rather than to scale.

The middle row gets the most direct sun in May, about 17 hours on the 30th, or the last day of a shorter month, and the least in December, about 6 hours.

  • Sun reaches the spot (solid)
  • Sun up, something in the way (lined)
  • Sun down (empty)
The grid, in a table
Hours of direct sun at The middle row on the 30th, or the last day of a shorter month, and when.
MonthDirect sunWhen
January8 h8:00 AM–4:00 PM
February11 h7:00 AM–6:00 PM
March13 h7:00 AM–8:00 PM
April15 h6:00 AM–9:00 PM
May17 h5:00 AM–10:00 PM
June17 h5:00 AM–10:00 PM
July15 h6:00 AM–9:00 PM
August13 h7:00 AM–8:00 PM
September11 h8:00 AM–7:00 PM
October10 h7:00 AM–5:00 PM
November7 h8:00 AM–3:00 PM
December6 h9:00 AM–3:00 PM
The sun’s path on the plan, October 30, in a table
Where the sun is at each hour it is up.
HourComes fromHeight
7:00 AMSE (113°)1° up
8:00 AMSE (125°)9° up
9:00 AMSE (139°)16° up
10:00 AMSE (153°)21° up
11:00 AMS (168°)24° up
12:00 PMS (184°)25° up
1:00 PMS (200°)23° up
2:00 PMSW (215°)18° up
3:00 PMSW (228°)12° up
4:00 PMSW (241°)5° up

What the place is doing at 8am in October

Temperate maritime, mild, grey, damp (scenario shape).

What it feels like

Estimate: Worked out, but at least one input was assumed rather than measured.cool

52°F

Felt temperature

The bar is the 0–100 reporting scale, mapped from the reading above: 0 is none of it, 100 the top of the scale.

The air is 48.6°F. It feels about 3.4 degrees warmer than the air, near 52°F, which is cool.

What is doing it

What makes this reading 52°FA running total. It starts at 51°F with every named influence removed, then each influence is added in turn.51°Fshaded air+2°FDirect sun…−1°FLight boun…52°Fwhat it is

Take every named influence away and this reads 51°F. Direct sun on the seat adds 2°F, Light bouncing up off the paving takes off 1°F. That lands at 52°F.

How this was worked out
Air
48.6°F from Temperate maritime, mild, grey, damp (scenario shape), scenario (from a published source)
Radiant
57.3°F mean radiant temperature
Method
Six-directional radiation integration, then ASHRAE operative temperature (from a published source)

Direct sun

Worked out: Computed from the geometry, the sun and the weather you gave it.in sun

10.2 W/m²

Beam reaching this point

The bar is the 0–100 reporting scale, mapped from the reading above: 0 is none of it, 100 the top of the scale.

Direct sun is on this spot right now.

How this was worked out
Sun
9deg up, bearing 125deg
Traced
100% of the beam reaches this point

Glare

Worked out: Computed from the geometry, the sun and the weather you gave it.none

7

On the 0–100 reporting scale: 0 is none of it, 100 the top of the scale. Not a measurement.

The bar is the 0–100 reporting scale, mapped from the reading above: 0 is none of it, 100 the top of the scale.

The sun is 56 degrees off the line of sight and low enough to stay in peripheral vision.

How this was worked out
Facing
180deg (assumed, not measured)
Sun off the line of sight
56deg
Assumed
Which way the seat faces has not been set, so glare is estimated from the open direction. (assumed, not measured)

Privacy exposure

Unanswered: Something this depends on has not been given, so nothing is being guessed.

No observer has been placed yet. Privacy is a question about who can see in from where, and until one is marked there is nothing to answer.

Wind

Estimate: Worked out, but at least one input was assumed rather than measured.still

1 mph

Wind at the seat

The bar is the 0–100 reporting scale, mapped from the reading above: 0 is none of it, 100 the top of the scale.

The shed is taking about 56% of the wind off this spot.

What is doing it

  • The shed

    −0.7 mph
How this was worked out
Reference
10.1 mph at 10 m from Temperate maritime, mild, grey, damp (scenario shape), scenario (from a published source)
At seat height
1.3 mph before shelter
Shelter
56% removed by what stands upwind

View

Unanswered: Something this depends on has not been given, so nothing is being guessed.

No view worth keeping has been marked, so there is nothing to weigh a screen against yet.

Surface heat

Estimate: Worked out, but at least one input was assumed rather than measured.comfortable

54°F

Surface temperature

The bar is the 0–100 reporting scale, mapped from the reading above: 0 is none of it, 100 the top of the scale.

The surface is running about 54°F.

How this was worked out
Surface
The plot
Method
Absorbed shortwave against air temperature, flattened by air movement (from a published source)

Wetness

Estimate: Worked out, but at least one input was assumed rather than measured.dries-fast

1 × the open

Drying time against the open

The bar is the 0–100 reporting scale, mapped from the reading above: 0 is none of it, 100 the top of the scale.

Still air here; moving air does a surprising amount of the drying.

How this was worked out
Drying rate
0.000 in/hour here
Method
Penman combination equation on the radiation and air actually reaching this spot (from a published source)

Light after dark

Worked out: Computed from the geometry, the sun and the weather you gave it.daylight

0

On the 0–100 reporting scale: 0 is none of it, 100 the top of the scale. Not a measurement.

The bar is the 0–100 reporting scale, mapped from the reading above: 0 is none of it, 100 the top of the scale.

Artificial light is not doing anything at this hour.

How this was worked out
Sun
still up

Ask something else about this place

Everything on the plan, in text
ThingReadingStandingNote
The shed7 ft 3 inMeasured: Taken with a tape, a compass or a clock at the place.100 per cent solid.