@podzemnik_spb: statistics and cleanliness index
Подземник 👷🏻♂️
Связаться с автором 👷🏻♂️ https://t.me/Podzemny_bot Всё, что стоит знать о строительстве метрополитена в Санкт-Петербурге Жажда подземелий 🖖🏼 isx23vxgiv1o8pnt
data from 2026-10-21
- Subscribers
- 12,557
- Median views
- 4,413
- ERR
- 35.1%
- Posts sampled
- 40
Data from 2026-10-21 — 17 days old.
Assessment summary
A detailed chronicle of St. Petersburg metro construction: tunnel boring, excavation pits, station repairs, and discussions of new sections — almost every post has a photo from the construction site.
A post is seen by every third subscriber, and over two months median views grew from 1969 to 4413 with a gain of only 273 subscribers — reach growth is not coming from an influx of audience. There are no ads or forwards in the sample, posts are published roughly once a day, so the post stays in the feed longer than for city news channels with a dozen posts per day.
About the channel
A channel about metro construction in St. Petersburg: what is happening at the Bogatyrskaya, Kamenka, and Bronevaya sites, how the TBMs are progressing, and when new stations will open. It has been run for 4 years 8 months, is written in Russian, and almost every post is a photo from the construction site with a detailed breakdown of the work.
In the catalog, nearby city channels are listed: @piterach and @unknown_piter are larger, @b42coldwar is smaller. At the same time, this channel outperforms each of them in the share of subscribers who see a post: @piterach has ERR 13.9%, @b42coldwar has 11.5%, and @unknown_piter has 2.7%.
What it publishes:
- Construction progress: reports from sites — excavation of the pit at Bogatyrskaya, diaphragm wall at Kamenka.
- Tunnel boring: how the Vera, Lyubov, and Nadezhda TBMs are progressing and how much remains until Zastavskaya.
- Station repairs: major overhaul of Staraya Derevnya, new vestibule at Frunzenskaya, repairs at Obukhovo.
- Projects and discussions: hearings on the Koltsevaya Line, sites for Farforovskaya and the Arsenalnoye depot.
Posts are published mainly in the afternoon and evening, 85% on weekdays, roughly once a day. There are no forwards from other channels or ads in the sample; tags are #подземник and #санктпетербург. The feed is one or two detailed notes per day with photos from the construction site, without ads or reposts.
By subscribers, it ranks #68 of 92 channels in the News and Media niche of the catalog.
What grade A+ means
The metrics agree with each other: views and reactions are distributed as usual, and almost no signals lower the index.
Compared with similar channels
Compared with 22 News and Media catalog channels whose metrics look normal. They are a similar size: 4,219 to 37,221 subscribers.
This is not a niche norm: only catalog channels are included. A high ERR is not always a plus: if the other metrics do not support it, the index goes down.
Compare with another channel
Dynamics and anomalies
Scroll horizontally to see the full charts.
Views by post
The latest 40 posts with views, from Sep 15 to Oct 20. The dashed line is the median (4,413).
- post views
- 1 post newer than one day and still gaining views
- median 4,413
Maximum: 6,262 views. Data as of Oct 21.
No deviations in views. Views are only part of the metrics, so look at the whole index.
Cleanliness-index history
3 checks for this channel.
Advertising outlook
Advertising placement: reasonable.
About 2,502–2,869 people will see your post in the first 48 hours.
Reach of advertising posts
No advertising posts among the latest 40.
Buy advertising
Telegram ads are sold on these marketplaces — they have channel catalogs, prices, and checkout.
We don't sell ads. This channel may not be listed there.
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Questions about @podzemnik_spb
Is the channel clean? Is there any botting here?
The purity index is 98 out of 100, grade A+, level “metrics are normal.” The check found no signals that would lower the index.
What share of subscribers sees one post?
ERR is about 35%: with 12 557 subscribers, median views are 4413. This is higher than for similar channels in the catalog.
Can ads be placed here?
Placement is marked as justified. There were no ad posts in the sample, so ad post reach was not calculated.
How the assessment was produced
- Data source
- Public Telegram data: posts, views, reactions, and channel metadata.
- Date or snapshot
- 2026-10-21
- Sample
- The latest 40 public posts available at check time.
- Calculation method
- TG Inspector calculates metrics from the saved snapshot and combines independent signals into a deterministic 0–100 cleanliness index.
- Factual result
- The @podzemnik_spb assessment dated 2026-10-21 uses 40 recent public posts. At that snapshot the channel had 12,557 subscribers, median post views were 4,413, ERR was 35.1%, and the cleanliness index was 98/100.
- Limitations
- This is a probabilistic assessment based on public data: it describes metrics, not the owner's actions, and is not a real-time measurement.
This automated assessment is probabilistic: it describes the channel's public metrics, not its owner's actions. The index and grade are calculated from public data and are not changed on request. Channel owners can request removal of the page — t.me/obsessed_with_ai.