Calypso Instruments

𝐓𝐡𝐞 𝐧𝐢𝐠𝐡𝐭 𝐛𝐞𝐟𝐨𝐫𝐞 𝐚 𝐦𝐚𝐭𝐜𝐡 𝐢𝐬 𝐚 𝐛𝐞𝐭𝐭𝐞𝐫 𝐭𝐢𝐦𝐞 𝐭𝐨 𝐜𝐡𝐞𝐜𝐤 𝐲𝐨𝐮𝐫 𝐠𝐞𝐚𝐫 𝐭𝐡𝐚𝐧 𝐭𝐡𝐞 𝐦𝐨𝐫𝐧𝐢𝐧𝐠 𝐨𝐟.

Not because anything's more likely to be broken tonight.
Because tonight, nobody's timing you.

A dead battery discovered at 9pm is a problem you still have time to solve.

The same dead battery discovered in the queue for stage one is a problem you're solving in front of six people.

𝐂𝐡𝐚𝐫𝐠𝐞 𝐢𝐭 𝐭𝐨𝐧𝐢𝐠𝐡𝐭. 𝐂𝐨𝐧𝐟𝐢𝐫𝐦 𝐭𝐡𝐞 𝐜𝐨𝐧𝐧𝐞𝐜𝐭𝐢𝐨𝐧. 𝐂𝐡𝐞𝐜𝐤 𝐭𝐡𝐞 𝐭𝐡𝐢𝐧𝐠𝐬 𝐲𝐨𝐮 𝐚𝐬𝐬𝐮𝐦𝐞 𝐚𝐫𝐞 𝐟𝐢𝐧𝐞 𝐛𝐞𝐜𝐚𝐮𝐬𝐞 𝐭𝐡𝐞𝐲 𝐰𝐞𝐫𝐞 𝐟𝐢𝐧𝐞 𝐥𝐚𝐬𝐭 𝐭𝐢𝐦𝐞.

Do the boring check now, while boring is still an option.

𝐓𝐡𝐞 𝐏𝐑𝐒 𝐏𝐫𝐨 𝐒𝐞𝐫𝐢𝐞𝐬 𝐢𝐬 𝐚𝐭 𝐓𝐰𝐢𝐬𝐭𝐞𝐝 𝐁𝐚𝐫𝐫𝐞𝐥 𝐏𝐫𝐞𝐜𝐢𝐬𝐢𝐨𝐧 𝐢𝐧 𝐋𝐢𝐭𝐭𝐥𝐞 𝐑𝐨𝐜𝐤 𝐭𝐡𝐢𝐬 𝐰𝐞𝐞𝐤𝐞𝐧𝐝.

Whatever's in your bag by Friday night is probably what you're shooting with.

If you're carrying your wind meter between stages, that's the 𝐏𝐨𝐫𝐭𝐚𝐛𝐥𝐞 𝐌𝐢𝐧𝐢 workflow: compact, light, and easy to keep with the rest of your kit.

If you also want temperature, pressure and humidity measured where you're actually shooting, that's where 𝐖𝐞𝐚𝐭𝐡𝐞𝐫𝐃𝐨𝐭 fits alongside it.

𝐌𝐢𝐧𝐢 𝐦𝐞𝐚𝐬𝐮𝐫𝐞𝐬 𝐭𝐡𝐞 𝐰𝐢𝐧𝐝 𝐚𝐭 𝐲𝐨𝐮𝐫 𝐟𝐢𝐫𝐢𝐧𝐠 𝐩𝐨𝐢𝐧𝐭.
𝐖𝐞𝐚𝐭𝐡𝐞𝐫𝐃𝐨𝐭 𝐚𝐝𝐝𝐬 𝐥𝐨𝐜𝐚𝐥 𝐚𝐭𝐦𝐨𝐬𝐩𝐡𝐞𝐫𝐢𝐜 𝐢𝐧𝐩𝐮𝐭𝐬 𝐟𝐨𝐫 𝐲𝐨𝐮𝐫 𝐛𝐚𝐥𝐥𝐢𝐬𝐭𝐢𝐜 𝐜𝐚𝐥𝐜𝐮𝐥𝐚𝐭𝐢𝐨𝐧𝐬.

Two different jobs. One decision worth making before Saturday morning.
We're not affiliated with the match. Just useful to have sorted before the weekend starts.

𝐓𝐞𝐦𝐩𝐞𝐫𝐚𝐭𝐮𝐫𝐞, 𝐩𝐫𝐞𝐬𝐬𝐮𝐫𝐞 𝐚𝐧𝐝 𝐡𝐮𝐦𝐢𝐝𝐢𝐭𝐲.

You've read that list a dozen times, and humidity always comes third, which is probably why it's the one most people mentally round to zero.

𝐈𝐭 𝐢𝐬𝐧'𝐭 𝐳𝐞𝐫𝐨.

Humid air is less dense than dry air at the same temperature and pressure because water v***r is lighter than the nitrogen and oxygen it displaces. Less dense air means less aerodynamic drag, which means a bullet will retain slightly more velocity than it would in otherwise identical, drier air.

The effect is smaller than temperature's, and smaller than pressure's.

A shooter who accounts for temperature and pressure but skips humidity isn't ignoring a myth. They're leaving out a real atmospheric input because its effect is comparatively small.

That doesn't make humidity the most important number in your solver.

𝐈𝐭 𝐦𝐚𝐤𝐞𝐬 𝐳𝐞𝐫𝐨 𝐭𝐡𝐞 𝐰𝐫𝐨𝐧𝐠 𝐧𝐮𝐦𝐛𝐞𝐫 𝐰𝐡𝐞𝐧 𝐳𝐞𝐫𝐨 𝐢𝐬𝐧'𝐭 𝐭𝐡𝐞 𝐜𝐨𝐧𝐝𝐢𝐭𝐢𝐨𝐧 𝐲𝐨𝐮'𝐫𝐞 𝐬𝐡𝐨𝐨𝐭𝐢𝐧𝐠 𝐢𝐧.

If your solver has a field for humidity, give it a current input.

𝐖𝐞𝐚𝐭𝐡𝐞𝐫𝐃𝐨𝐭 𝐫𝐞𝐚𝐝𝐬 𝐚𝐥𝐥 𝐭𝐡𝐫𝐞𝐞, 𝐭𝐞𝐦𝐩𝐞𝐫𝐚𝐭𝐮𝐫𝐞, 𝐩𝐫𝐞𝐬𝐬𝐮𝐫𝐞 𝐚𝐧𝐝 𝐡𝐮𝐦𝐢𝐝𝐢𝐭𝐲, 𝐟𝐫𝐨𝐦 𝐭𝐡𝐞 𝐬𝐚𝐦𝐞 𝐬𝐩𝐨𝐭. 𝐒𝐨 𝐢𝐟 𝐲𝐨𝐮'𝐫𝐞 𝐚𝐥𝐫𝐞𝐚𝐝𝐲 𝐦𝐞𝐚𝐬𝐮𝐫𝐢𝐧𝐠 𝐭𝐰𝐨 𝐨𝐟 𝐭𝐡𝐞𝐦, 𝐭𝐡𝐞 𝐭𝐡𝐢𝐫𝐝 𝐢𝐬𝐧'𝐭 𝐚𝐧 𝐞𝐱𝐭𝐫𝐚 𝐬𝐭𝐞𝐩.

𝐓𝐰𝐨 𝐪𝐮𝐞𝐬𝐭𝐢𝐨𝐧𝐬 𝐧𝐚𝐫𝐫𝐨𝐰 𝐝𝐨𝐰𝐧 𝐰𝐡𝐢𝐜𝐡 𝐬𝐞𝐭𝐮𝐩 𝐲𝐨𝐮 𝐧𝐞𝐞𝐝, 𝐚𝐧𝐝 𝐧𝐞𝐢𝐭𝐡𝐞𝐫 𝐨𝐟 𝐭𝐡𝐞𝐦 𝐢𝐬 𝐩𝐫𝐢𝐜𝐞.

Do you need 𝐀𝐩𝐩𝐥𝐢𝐞𝐝 𝐁𝐚𝐥𝐥𝐢𝐬𝐭𝐢𝐜𝐬 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 𝐬𝐩𝐞𝐜𝐢𝐟𝐢𝐜𝐚𝐥𝐥𝐲?
Then look at the Mini AB while remaining inventory lasts. It's the discontinued Applied Ballistics version of the Portable Mini, and when current stock is gone, it's gone.

Don't need AB integration?

For most shooters, the standard Portable Mini is the straightforward choice for measuring wind speed and direction at the firing point. 𝐈𝐭'𝐬 $𝟑𝟗𝟏.

Second question:
𝐃𝐨 𝐲𝐨𝐮 𝐰𝐚𝐧𝐭 𝐭𝐞𝐦𝐩𝐞𝐫𝐚𝐭𝐮𝐫𝐞, 𝐩𝐫𝐞𝐬𝐬𝐮𝐫𝐞 𝐚𝐧𝐝 𝐡𝐮𝐦𝐢𝐝𝐢𝐭𝐲 𝐦𝐞𝐚𝐬𝐮𝐫𝐞𝐝 𝐰𝐡𝐞𝐫𝐞 𝐲𝐨𝐮'𝐫𝐞 𝐚𝐜𝐭𝐮𝐚𝐥𝐥𝐲 𝐬𝐡𝐨𝐨𝐭𝐢𝐧𝐠?

Add a WeatherDot.

The Mini measures wind. WeatherDot adds those atmospheric measurements at your location, giving your ballistic solver local inputs for its atmospheric calculations instead of relying on conditions sourced somewhere else. And the mini stacks on top of the WeatherDot for your setup.

That's the decision tree.

𝐍𝐞𝐞𝐝 𝐰𝐢𝐧𝐝? 𝐌𝐢𝐧𝐢.
𝐍𝐞𝐞𝐝 𝐧𝐚𝐭𝐢𝐯𝐞 𝐀𝐩𝐩𝐥𝐢𝐞𝐝 𝐁𝐚𝐥𝐥𝐢𝐬𝐭𝐢𝐜𝐬 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧? 𝐌𝐢𝐧𝐢 𝐀𝐁, 𝐰𝐡𝐢𝐥𝐞 𝐢𝐧𝐯𝐞𝐧𝐭𝐨𝐫𝐲 𝐫𝐞𝐦𝐚𝐢𝐧𝐬.
𝐍𝐞𝐞𝐝 𝐥𝐨𝐜𝐚𝐥 𝐭𝐞𝐦𝐩𝐞𝐫𝐚𝐭𝐮𝐫𝐞, 𝐩𝐫𝐞𝐬𝐬𝐮𝐫𝐞 𝐚𝐧𝐝 𝐡𝐮𝐦𝐢𝐝𝐢𝐭𝐲 𝐭𝐨𝐨? 𝐀𝐝𝐝 𝐖𝐞𝐚𝐭𝐡𝐞𝐫𝐃𝐨𝐭.

Not sure which combination makes sense for how you shoot?

Ask below. Tell us what you're shooting and what solver you're using, and we'll tell you which setup fits.

𝐀 𝐟𝐮𝐥𝐥 𝐟𝐢𝐫𝐢𝐧𝐠 𝐥𝐢𝐧𝐞 𝐡𝐚𝐬 𝐚 𝐰𝐚𝐲 𝐨𝐟 𝐦𝐚𝐤𝐢𝐧𝐠 𝐭𝐡𝐞 𝐰𝐢𝐧𝐝 𝐫𝐞𝐚𝐝 𝐟𝐞𝐞𝐥 𝐬𝐡𝐨𝐫𝐭𝐞𝐫.

Not because the shooters are worse.

Because fifteen seconds spent reading the conditions starts to feel a lot longer when six people are waiting behind you.

The wind doesn't get easier under pressure.
𝐓𝐡𝐞 𝐫𝐞𝐚𝐝 𝐣𝐮𝐬𝐭 𝐠𝐞𝐭𝐬 𝐞𝐚𝐬𝐢𝐞𝐫 𝐭𝐨 𝐫𝐮𝐬𝐡.

And when the shot misses, it's tempting to start looking at the r***e, the ammo or the dope instead of the decision that happened before the trigger broke.

One thing that costs nothing:

𝐒𝐭𝐚𝐫𝐭 𝐫𝐞𝐚𝐝𝐢𝐧𝐠 𝐭𝐡𝐞 𝐰𝐢𝐧𝐝 𝐛𝐞𝐟𝐨𝐫𝐞 𝐲𝐨𝐮'𝐫𝐞 𝐢𝐧 𝐩𝐨𝐬𝐢𝐭𝐢𝐨𝐧.
Check the firing point. Look downrange. See what the flags, grass and mirage are doing.

Then get settled and keep reading.

You're not adding fifteen seconds while everyone waits. You're moving part of the work to a moment when you already had the time.

𝐓𝐡𝐞 𝐜𝐨𝐧𝐝𝐢𝐭𝐢𝐨𝐧𝐬 𝐝𝐨𝐧'𝐭 𝐜𝐚𝐫𝐞 𝐡𝐨𝐰 𝐥𝐨𝐧𝐠 𝐭𝐡𝐞 𝐥𝐢𝐧𝐞 𝐢𝐬.

When the range gets busy, does your wind routine change?

𝐒𝐨𝐦𝐞𝐰𝐡𝐞𝐫𝐞 𝐚𝐭 𝐞𝐯𝐞𝐫𝐲 𝐦𝐚𝐭𝐜𝐡 𝐭𝐡𝐞𝐫𝐞'𝐬 𝐚 𝐰𝐢𝐧𝐝 𝐦𝐞𝐭𝐞𝐫 𝐢𝐧 𝐚 𝐛𝐚𝐠 𝐭𝐡𝐚𝐭 𝐡𝐚𝐬𝐧'𝐭 𝐛𝐞𝐞𝐧 𝐭𝐨𝐮𝐜𝐡𝐞𝐝 𝐬𝐢𝐧𝐜𝐞 𝐭𝐡𝐞 𝐬𝐡𝐨𝐨𝐭𝐞𝐫 𝐛𝐨𝐮𝐠𝐡𝐭 𝐢𝐭.

Not because it's broken.
Because pulling it out, taking a reading and turning that number into a wind call takes longer than the habit already sitting there.

Glance at the mirage. Look at the flags. Make the call.
That's not necessarily a belief problem.
𝐈𝐭'𝐬 𝐚 𝐰𝐨𝐫𝐤𝐟𝐥𝐨𝐰 𝐩𝐫𝐨𝐛𝐥𝐞𝐦.

If measuring the wind is something you remember to do when the clock is already running, the habit you've practiced a thousand times has a head start.

So don't make the measurement compete with the stage.
Build it into what happens 𝐛𝐞𝐟𝐨𝐫𝐞 the clock.

Meter out. Check the wind at the firing point. Look downrange. Compare it with the flags, grass and mirage.

Then make your call.

The instrument doesn't replace any of those things. It gives you one measured point to start from before everything else starts moving.

𝐓𝐡𝐞 𝐛𝐞𝐬𝐭 𝐰𝐢𝐧𝐝 𝐚𝐧𝐝 𝐞𝐧𝐯𝐢𝐫𝐨𝐧𝐦𝐞𝐧𝐭𝐚𝐥 𝐦𝐞𝐭𝐞𝐫 𝐢𝐧 𝐭𝐡𝐞 𝐰𝐨𝐫𝐥𝐝 𝐜𝐚𝐧'𝐭 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐟𝐫𝐨𝐦 𝐢𝐧𝐬𝐢𝐝𝐞 𝐭𝐡𝐞 𝐛𝐚𝐠.

When do you actually check yours?
𝐁𝐞𝐟𝐨𝐫𝐞 𝐲𝐨𝐮'𝐯𝐞 𝐦𝐚𝐝𝐞 𝐭𝐡𝐞 𝐜𝐚𝐥𝐥, 𝐨𝐫 𝐚𝐟𝐭𝐞𝐫 𝐲𝐨𝐮'𝐫𝐞 𝐚𝐥𝐫𝐞𝐚𝐝𝐲 𝐭𝐫𝐲𝐢𝐧𝐠 𝐭𝐨 𝐜𝐨𝐧𝐟𝐢𝐫𝐦 𝐢𝐭?

𝐎𝐧𝐞 𝐫𝐞𝐚𝐝𝐢𝐧𝐠 𝐢𝐬 𝐧𝐨𝐭 𝐚 𝐜𝐨𝐧𝐝𝐢𝐭𝐢𝐨𝐧.
You pick up the wind meter, hold it up or position it, get a number and write it down. That number is a snapshot of something that has not stopped moving since you got there.

Take three readings across thirty seconds instead.
Not for the average.

For the spread.
6.2.
6.5.
6.3.

That's telling you something very different from:
4.1.
6.7.
8.0.

Same firing point. Same thirty seconds. Very different problem to solve.

The second set isn't asking you to find the perfect number in the middle and call it the wind.

𝐓𝐡𝐞 𝐬𝐩𝐫𝐞𝐚𝐝 𝐢𝐬 𝐩𝐚𝐫𝐭 𝐨𝐟 𝐭𝐡𝐞 𝐢𝐧𝐟𝐨𝐫𝐦𝐚𝐭𝐢𝐨𝐧.

It tells you how much the wind at your firing point was moving while you measured it. Then the flags, grass, mirage and everything else downrange still have their own part to play.

Most people throw that first piece of information away by taking one reading and treating it as the condition.

It costs you about twenty-five extra seconds to see what the single number couldn't show you.

Do you take one reading or several, honestly?

𝐘𝐨𝐮𝐫 𝐬𝐞𝐜𝐨𝐧𝐝 𝐬𝐡𝐨𝐭 𝐤𝐧𝐨𝐰𝐬 𝐬𝐨𝐦𝐞𝐭𝐡𝐢𝐧𝐠 𝐲𝐨𝐮𝐫 𝐟𝐢𝐫𝐬𝐭 𝐬𝐡𝐨𝐭 𝐝𝐢𝐝𝐧'𝐭.

That's why it shouldn't get to rewrite the story.
You send the first round. It lands low. You make a correction. Second round lands where you wanted it.

What gets written in the data book?
Usually the correction.

Which means the next time you come back, you're starting with the answer you arrived at after seeing an impact, not the conditions that produced the first one.

Temperature. Pressure. Wind.

𝐓𝐡𝐞 𝐚𝐢𝐫 𝐰𝐚𝐬 𝐚 𝐬𝐩𝐞𝐜𝐢𝐟𝐢𝐜 𝐭𝐡𝐢𝐧𝐠 𝐚𝐭 𝐭𝐡𝐞 𝐦𝐨𝐦𝐞𝐧𝐭 𝐭𝐡𝐚𝐭 𝐟𝐢𝐫𝐬𝐭 𝐫𝐨𝐮𝐧𝐝 𝐥𝐞𝐟𝐭 𝐭𝐡𝐞 𝐛𝐚𝐫𝐫𝐞𝐥. 𝐈𝐟 𝐲𝐨𝐮 𝐝𝐢𝐝𝐧'𝐭 𝐫𝐞𝐜𝐨𝐫𝐝 𝐢𝐭, 𝐭𝐡𝐚𝐭 𝐩𝐚𝐫𝐭 𝐨𝐟 𝐭𝐡𝐞 𝐬𝐡𝐨𝐭 𝐢𝐬 𝐠𝐨𝐧𝐞.

That matters because first-round performance is a different question from whether you can correct onto a target.

If you want to know what your r***e, your data and your conditions actually give you cold, start recording the first round separately.

Distance. What the air was doing when you sent it. What you dialled. Where it landed.

Then make whatever correction you normally would.
Do that across enough range days and you'll start seeing something a photograph of your best group cannot show you.

Does low impact keep showing up under similar conditions? Worth investigating.
Consistently favouring one side in a particular wind? Worth investigating.
Random in every direction? That tells you something too.

You don't need to change how you shoot.
𝐉𝐮𝐬𝐭 𝐬𝐭𝐨𝐩 𝐥𝐞𝐭𝐭𝐢𝐧𝐠 𝐭𝐡𝐞 𝐜𝐨𝐫𝐫𝐞𝐜𝐭𝐞𝐝 𝐬𝐡𝐨𝐭 𝐞𝐫𝐚𝐬𝐞 𝐰𝐡𝐚𝐭 𝐭𝐡𝐞 𝐟𝐢𝐫𝐬𝐭 𝐨𝐧𝐞 𝐰𝐚𝐬 𝐭𝐫𝐲𝐢𝐧𝐠 𝐭𝐨 𝐭𝐞𝐥𝐥 𝐲𝐨𝐮 𝐚𝐛𝐨𝐮𝐭 𝐭𝐡𝐞 𝐚𝐢𝐫 𝐢𝐭 𝐟𝐥𝐞𝐰 𝐭𝐡𝐫𝐨𝐮𝐠𝐡.

How often are you recording your first-round impact, and the conditions behind it, separately from the rest of the string?

𝙈𝙤𝙨𝙩 𝙥𝙚𝙤𝙥𝙡𝙚 𝙥𝙞𝙘𝙠 𝙩𝙝𝙚 𝙨𝙩𝙖𝙣𝙙 𝙬𝙞𝙩𝙝 𝙩𝙝𝙚 𝙨𝙞𝙜𝙣 𝙖𝙣𝙙 𝙝𝙤𝙥𝙚 𝙩𝙝𝙚 𝙬𝙞𝙣𝙙 𝙘𝙤𝙤𝙥𝙚𝙧𝙖𝙩𝙚𝙨.

Rubs, scrapes, a trail that has been used all summer.

You know where the deer are, so you hang a stand where the deer are. Then you check the forecast that morning and hope the wind gives you a reason to sit it.

𝙏𝙪𝙧𝙣 𝙞𝙩 𝙖𝙧𝙤𝙪𝙣𝙙. 𝙋𝙞𝙘𝙠 𝙩𝙝𝙚 𝙬𝙞𝙣𝙙 𝙛𝙞𝙧𝙨𝙩.

Most stands have winds that make them better choices and winds that make them bad ones.

If you know which is which, the forecast stops being a hope and becomes a filter.

Northwest this morning? Creek stand.

Southerly? Ridge stand.

Neither works with the wind you've got?

𝐒𝐢𝐭 𝐬𝐨𝐦𝐞𝐰𝐡𝐞𝐫𝐞 𝐞𝐥𝐬𝐞.

Most hunters could probably write that list from memory and have never actually written it down.

It takes ten minutes. It costs nothing. And instead of asking whether the wind will cooperate with the stand you wanted to hunt, you start asking which stand fits the wind you actually have.

Sit the wind, not the sign.

Which of your stands is the one you keep sitting on the wrong wind because you just like it there?

𝐘𝐨𝐮𝐫 𝐝𝐚𝐭𝐚 𝐛𝐨𝐨𝐤 𝐢𝐬 𝐚 𝐫𝐞𝐜𝐨𝐫𝐝 𝐨𝐟 𝐰𝐡𝐚𝐭 𝐲𝐨𝐮 𝐝𝐢𝐚𝐥𝐞𝐝. 𝐈𝐭 𝐢𝐬 𝐧𝐨𝐭 𝐚 𝐫𝐞𝐜𝐨𝐫𝐝 𝐨𝐟 𝐰𝐡𝐲 𝐢𝐭 𝐰𝐨𝐫𝐤𝐞𝐝.

Look at what a dope card actually holds.
Distance, which you already knew. Elevation, which is the output. Wind hold, which is the output. Hit or miss.

Every one of those is an answer, and the question is somewhere else.
𝐓𝐡𝐞 𝐪𝐮𝐞𝐬𝐭𝐢𝐨𝐧, 𝐢𝐬 𝐰𝐡𝐚𝐭 𝐭𝐡𝐞 𝐚𝐢𝐫 𝐰𝐚𝐬 𝐝𝐨𝐢𝐧𝐠.

Temperature, pressure and humidity, which determine its density. Wind speed and direction where you were lying, not just what the flags were doing downrange. What time it was, because the conditions at eleven in the morning may not be the conditions you had at seven.

None of that is on most cards.

So when the same dope fails you six weeks later, you have no way of knowing whether the load drifted, the r***e changed, or the air simply was not the same air.

Which means the most useful thing in your bag may not be a better solver.
𝐈𝐭 𝐦𝐚𝐲 𝐛𝐞 𝐚 𝐫𝐞𝐜𝐨𝐫𝐝 𝐨𝐟 𝐜𝐨𝐧𝐝𝐢𝐭𝐢𝐨𝐧𝐬 𝐥𝐨𝐧𝐠 𝐞𝐧𝐨𝐮𝐠𝐡 𝐭𝐨 𝐜𝐨𝐦𝐩𝐚𝐫𝐞 𝐚𝐠𝐚𝐢𝐧𝐬𝐭.
Two columns is enough to start.

Next to every string, write the temperature and the wind you measured at the firing point. Not the forecast. What your own instrument said, where you were lying.

Two numbers. Five seconds.
After a season, you can do something you cannot do now.

You can pull every entry near 10°C and see whether your dope was consistent. You can find the day it wasn't and check what the air was doing that morning. You can stop guessing which variable moved.

If you use AnemoTracker, it can do the writing for you. Name a track, leave it running, and it logs the time, position, wind speed and direction into one file you can export.

But a pencil works.
The point is the record, not the method.
Your solver already knows how to do the maths.

𝐖𝐡𝐚𝐭 𝐢𝐭 𝐜𝐚𝐧𝐧𝐨𝐭 𝐫𝐞𝐜𝐨𝐧𝐬𝐭𝐫𝐮𝐜𝐭 𝐬𝐢𝐱 𝐰𝐞𝐞𝐤𝐬 𝐥𝐚𝐭𝐞𝐫 𝐢𝐬 𝐚𝐧 𝐚𝐭𝐦𝐨𝐬𝐩𝐡𝐞𝐫𝐢𝐜 𝐢𝐧𝐩𝐮𝐭 𝐧𝐨𝐛𝐨𝐝𝐲 𝐦𝐞𝐚𝐬𝐮𝐫𝐞𝐝 𝐚𝐧𝐝 𝐧𝐨𝐛𝐨𝐝𝐲 𝐰𝐫𝐨𝐭𝐞 𝐝𝐨𝐰𝐧.

What are you actually recording next to your dope, if anything?