PROBIT ANALYSIS - V50 / PROBIT TOOL
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HOW TO INSTALL
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1. Double-click  "Install Probit Analysis.bat"
2. Wait a few minutes while it sets things up.
3. When it finishes, "Probit Analysis.exe" is on your Desktop.
   Double-click that to run the tool any time.

That is the only step. You do NOT need to install anything else first -
the installer fetches what it needs (including Python, if it is missing).

First launch notes:
 - Windows may show a blue "SmartScreen" warning because the app is not
   code-signed. Click "More info" -> "Run anyway".
 - The app can take a few seconds to open the first time.


WHAT IT DOES
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Body-armour V50 assessment by the PROBIT method of NATO AEP-2920, Annex H.
Enter shot data (impact velocity + CP/PP result); it returns V50, the
standard deviation, V1, V99, the 95% confidence intervals, the S-curve, and
a PASS/FAIL check of the method's conditions. Save a PDF report + graph.

Main page:  Panel/Coupon ID, RFQ and Projectile are entered at the top, then
            paste or type your shot data and press Calculate.
Settings:   result coding, calculation parameters, company/operator, output
            folder (remembered once set), and light/dark theme.
Explanation: the method and its equations.

Load the built-in example (button on the main page) to confirm the tool
reproduces the AEP-2920 verification numbers: V50 = 515.2005, sd = 10.9791.


REBUILDING / UPDATING
---------------------
Re-run "Install Probit Analysis.bat" at any time to rebuild the Desktop exe
(for example after we send you an updated "app" folder).

The "app" folder contains the program source, if ever needed.


Support: use the Support page in the app (Contact Arcane Systems), or visit
https://probit.arcanesystems.co.uk/contact. Please include the Panel/Coupon
ID, a screenshot, and any error text. Method per AEP-2920 Annex H (NATO
UNCLASSIFIED, releasable). Developed by Arcane Systems.
