ChronoTrack Post-Race Read Analyzer

Quickly audit your reader and mat performance using real race-day data

The ChronoTrack Post-Race Read Analyzer is a free, browser-based tool that provides an immediate breakdown of your raw reader data after a race. Designed specifically for professional timers using ChronoTrack equipment, this tool processes the raw data line-by-line and helps you:

• Verify reader and mat coverage

• Identify weak or missing antennae

• Detect unusually low RSSI values or signal inconsistencies

• Share quick-read reports with partners or team leads

All directly in your browser — no install required.

How It Works

Upload your ChronoTrack raw data file — a CSV file where each line is delimited with the tilde symbol (~). A valid line might look like:

TO~31~279~248~123~1742103282.57~12853D~8~-67~15~P~28

The app parses each line and extracts key values, specifically:

• Device ID from field 6

• Virtual Port from field 7

• RSSI (Received Signal Strength Indicator) from field 8

• Average number of times tags were “observed” within the five second window per read from field 11

Each read is grouped by device and port, and performance is calculated across multiple metrics.

What It Measures

For every port on every device, the analyzer calculates:

• Count: Total number of reads captured

• Percent of device reads: Share of the total reads from that device

• Average RSSI: Mean signal strength value

• Average Tag Observations: Mean of the observations per read.

• Above Good reads: Number and percentage of reads with RSSI between -1 and -49

• Good reads: Reads with RSSI between -50 and -65

• Below Good reads: Reads with RSSI between -66 and -99

These signal strength ranges are based on ranges provided in ChronoTracks Pro2 documentation:

“The strength of the tag read is measured as a negative number. -10 would be a fantastic RSSI strength, while -99 would be terrible.[…] An average "good" read will be anywhere between -50 and -65 RSSI.”

While environmental factors and tag orientation can influence these values, this breakdown provides a clear and consistent method for identifying signal strength quality and potential trouble spots.

Reporting and Exporting

After processing, your results are displayed in a sortable, scrollable table. You can also export the data to a neatly formatted .txt file. The filename can be customized directly in the interface for easy sharing or archiving.

Why Use This Tool

Post-race data review is often overlooked, but it’s critical for improving event-day performance. This tool makes it simple to audit your hardware’s read performance and spot problems before they become patterns.

Use the analyzer to:

• Validate finish line or on-course coverage

• Compare reader behavior across devices

• Investigate missed reads or tag placement issues

• Provide post-race summaries to timing teams or clients

Who It’s For

This tool is built for:

• Race directors and operations leads needing validation after events

• Lead timers looking to verify mat performance

• Contracted timers preparing post-race summaries

• Anyone who wants to understand how well their ChronoTrack setup performed

Need Help or Have Questions?

you run into issues using this tool or want help interpreting your race data, feel free to reach out through the Contact section in the navigation bar. I’m happy to support other timers.