Tokyo VPN Speed Monitor

This project contains a dataset of 1950+ automated VPN performance measurements collected from Tokyo, Japan period in December 2025.

PROJECT OVERVIEW
This open science project aims to provide transparent, unbiased VPN performance data through automated testing. Unlike commercial VPN review sites, this project operates with zero revenue and complete transparency.

DATA COLLECTION PERIOD
- Start: Early December 2025
- Total measurements: 1950+ records

KEY FEATURES
- 15 VPN providers tested
- Measurements every 6 hours (4 times per day)
- Time-series data with statistical analysis
- Coefficient of Variation (CV) for stability assessment
- Automated testing using Google Apps Script
- $0/month operating cost (Google free tier)
- 99.8% system uptime

DATA FORMAT
CSV file containing:
- Timestamp
- VPN Service
- Download (Mbps)
- Upload (Mbps)
- Ping (ms)
- Instant Stability
- Reliability (%)
- Overall Score
- Rank

METHODOLOGY
All measurements are performed automatically using Google Apps Script deployed on Google's free infrastructure. Testing occurs every 6 hours from Tokyo, Japan. Statistical analysis includes Coefficient of Variation calculation for stability assessment.

LIVE SYSTEM & RESOURCES
- Live Dashboard: https://www.blstweb.jp/network/vpn/tokyo-vpn-speed-monitor/
- Source Code (GitHub): https://github.com/hmy0210/vpn-stability-ranking
- VPN Leak Detection Tool: https://www.blstweb.jp/network/vpn/security-diagnosis/

USE CASES
- VPN performance analysis and comparison
- Network research and education
- Time-series data analysis
- Benchmarking studies
- Academic research in networking

LICENSE
MIT License - Free to use for any purpose including commercial applications, research, and education.

DATASETS AVAILABLE ON
-Harvard dataverse: https://doi.org/10.7910/DVN/OMC9A4
- Zenodo: https://doi.org/10.5281/zenodo.18091751

This project is part of an open science initiative to provide transparent network performance data without commercial bias.