network graph of my web-of-notes

Ever Wonder What Your (Digital) Mind Looks Like?

Now, I can SEE my digital mind — thanks to a Python script that turns my notes, etc. into an interactive web graph. In this post, you’ll get a close-up look at it, plus some insights into how my ideas and artifacts actually connect. Spoiler alert: they’re NOT a hierarchy of folders within folders within folders.

February 2, 2026 · 4 min · Tim Graettinger
side-by-side screens captures from weather and radon instruments, resp.

The Weather-Radon Connection: Surprisingly Simple Rules

Radon, schmadon. I never thought about it — until a big rainstorm flooded our basement. During the cleanup, a good friend asked, ‘While you’re at it, have you ever checked your radon level?’ That little question led to remediation, a radon monitor, a weather station, and some surprisingly simple rules connecting the weather outside and the radon level inside.

January 28, 2026 · 4 min · Tim Graettinger
Chart of year-to-date cumulative ranifall

How to Fix a Cluttered Chart: Addition by Negative Subtraction

Ever make a chart and feel like it’s just… off? It’s supposed to tell a story — but doesn’t. I fixed mine using a process I call “addition by negative subtraction”.

November 17, 2025 · 3 min · Tim Graettinger
Image of a big rain gauge attached to a post

Have You Ever Seen the Rain? I Have — 1,387 Times

Ever wanted to be a citizen scientist? I started with a simple rain gauge. Eight years and 1,387 rain days later, here’s what I’ve learned…

September 17, 2025 · 6 min · Tim Graettinger
Time chart of radon levels over a ten-day period along with 3-hour and 24-hour rolling averages.

Collab: Exploring Radon Levels with Data Analyst GPT

I’ve been tracking radon levels in our home for 9 months. Collaborating with Data Analyst GPT to analyze them was actually fun…

July 16, 2025 · 8 min · Tim Graettinger
Chart of the number of power outages versus their duration.

It Was a Dark and Stormy Afternoon: How We Used Data to Prepare for Our Next Power Outage

The power went out and stayed out… for three days. How do you prepare for the next time?…

May 25, 2025 · 9 min · Tim Graettinger
Drawing of the well-holding tank-house system that supplies our water

The Day the Water Stopped: What I Learned During a Seven-Month Drought

We lost water to the house. What do you do next when you’re in a drought?…

April 21, 2025 · 7 min · Tim Graettinger