商用周波数モニタ（東日本）
GRID FREQUENCY
MONITOR
Current frequency
50.031Hz
Input state
SIGNAL OK
updated 2026-06-07 17:00:52 JST
Last 5 minutes
Last 1 hour
swipe to pan
Last 24 hours
1分集約
Last 30 days
10分集約
Frequency events
1h min49.90716:05
1h max50.08616:52
24h min49.82905:00
24h max50.15815:03
24h avg50.001
Clock ppm2.9