Solar wind, measured.
HISTORICAL DAY · 19 SEP 2026 · THE HERO REMAINS 13 OCT 2026
SOLAR WIND · 19 SEP 2026 · OBSERVED DAY · PUBLISHED 14 OCT 2026 06:37 UTC
- Speed
- 424 km/s
- Proton density
- 3.7 cm⁻³
- Temperature
- 111,000 K
Motion: speed · Population: density · Colour: temperature · Coverage 99.0%
An abstract encoding of one day's measurements. Not a physical model and not an instrument feed.
Daily history
The 61 observed days ending at the selected day. Arrow through the cells; a hatched cell is a day without an eligible record and says why. Nothing is interpolated.
Daily values
| Quantity | Mean | Minimum | Maximum | Std. deviation |
|---|---|---|---|---|
| Speed (km/s) | 424.46576224545084661521754730123261184541664152053 | 400.44901967082193634655386720040518486340483155944 | 449.62226342057680653437280466111371997087304387145 | 10.909049709340498328945330552007803816344904536083 |
| Proton density (cm⁻³) | 3.7272095975009791380148562451996644854302111244918 | 1.5937235355377197265625 | 7.002478122711181640625 | 1.1912150927871011318022128572176736523496974554526 |
| Temperature (K) | 110665.32305464471526772455982158779080685314266077 | 62353.66015625 | 179891.828125 | 22557.697028566703023136842902270443679135767026257 |
Canonical values as admitted; the hero strip rounds for display only.
Daily change and position
| Quantity | Change on previous day | Relative change | Prior-30 position | Prior-60 position |
|---|---|---|---|---|
| Speed | -0.76 km/s | -0.18% | — (fewer than 30 eligible prior days) | — (fewer than 60 eligible prior days) |
| Proton density | +0.83 cm⁻³ | +28.5% | — (fewer than 30 eligible prior days) | — (fewer than 60 eligible prior days) |
| Temperature | +17,547.79 K | +18.84% | — (fewer than 30 eligible prior days) | — (fewer than 60 eligible prior days) |
Position is the percentile of this day's mean among the eligible daily means of exactly the 30 or 60 preceding days. It describes position within that window, not rarity.
Coverage
| Quantity | Valid duration | Longest gap | Valid samples | Excluded samples |
|---|---|---|---|---|
| Speed | 23.77 h of 24.00 h | 0.02 h | 1435 | 8 |
| Proton density | 23.77 h of 24.00 h | 0.02 h | 1435 | 8 |
| Temperature | 23.77 h of 24.00 h | 0.02 h | 1435 | 8 |
Source and lineage
| Provider | NOAA |
|---|---|
| Spacecraft | SOLAR1 |
| Instrument | SWIPS |
| Product | swips-l2 |
| Processing status | operational_provisional |
| Time basis | spacecraft_utc |
| Series version | solar1-swips-l2-uncorrected-v1 |
| Method version | solar-daily/1.0.0 |
| Quality policy version | solar1-range/1.0.0 |
| Eligibility | ELIGIBLE |
| History basis | reconstructed |
| Producer revision | 2 |
| Knowledge cutoff | 2026-10-03T05:45:11.535147Z |
| Admission id | 0b83605060e9c40178263c16e1a76c8e8620b8c22235a14767ed2d91a205d3e5 |
| Admitted at | 2026-10-03T06:00:42.976053Z |
| Known to serving at | 2026-10-05T03:00:29.248953Z |
| Release id | sha256:d7c04c09699d6ad3667dceb7c321f1c4cabd02d616492fab46eb4b6bbb752976 |
| Portrait encoding | solar-portrait/2.0.0 |
Encoding bounds: speed 334–599 km/s (linear), density 1.73–14.36 cm⁻³ (log), temperature 69,412–357,988 K (log). Values outside saturate the visual and are marked clipped; the number shown is unchanged.