Educational reference. Measured from 144 recorded 10m bars of BTCUSD (Bitcoin) on Friday, September 18, 2026.
ADX crossed above 25 3 separate times during the session, and the typical visit lasted 520 minutes. Across the whole session it sat above 25 for 94.4% of the time, between 20 and 25 for 4.2%, and below 20 for 1.4%.
| Band | Share of session | Bars | Separate visits | Median visit | Longest visit | |
|---|---|---|---|---|---|---|
| Above 25 | 94.4% | 136 | 3 | 520 min | 640 min | |
| Between 20 and 25 | 4.2% | 6 | 3 | 10 min | 40 min | |
| Below 20 | 1.4% | 2 | 1 | 20 min | 20 min |
ADX measures trend STRENGTH and says nothing about direction — 30 is a strong move that may be up or down. Below 20 the market is ranging, and trend-following rules tend to be chopped up there.
Here the reading entered a trending reading 3 times, with a median stay of 520 minutes and a longest of 640. ADX is the filter most strategies gate on, so how long it actually held above the threshold decides how many of a day's signals would have been allowed through at all.