Solar wind, measured.
HISTORICAL DAY · 16 SEP 2026 · THE HERO REMAINS 13 OCT 2026
SOLAR WIND · 16 SEP 2026 · OBSERVED DAY · PUBLISHED 14 OCT 2026 06:37 UTC
- Speed
- 530 km/s
- Proton density
- 7.6 cm⁻³
- Temperature
- 256,000 K
Motion: speed · Population: density · Colour: temperature · Coverage 98.6%
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) | 530.32163351706203777809173865033591195141231659004 | 483.10857870229354502609265451113045360236067827059 | 578.6873774208368379904974695649994210712138259104 | 16.998884377627093130522118298354061658462300278659 |
| Proton density (cm⁻³) | 7.6125676937598389066063223724394982836093339580814 | 2.6901895999908447265625 | 30.879913330078125 | 4.5301953426419602161633231094111391647778242299587 |
| Temperature (K) | 256250.70196338910012156895562878054537249152189354 | 78577.515625 | 785970.875 | 143493.1636453919174010473930501226599753768582908 |
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 | — (previous day ineligible) | — (previous day ineligible) | — (fewer than 30 eligible prior days) | — (fewer than 60 eligible prior days) |
| Proton density | — (previous day ineligible) | — (previous day ineligible) | — (fewer than 30 eligible prior days) | — (fewer than 60 eligible prior days) |
| Temperature | — (previous day ineligible) | — (previous day ineligible) | — (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 | 23.67 h of 24.00 h | 0.03 h | 1429 | 27 |
| Proton density | 23.67 h of 24.00 h | 0.03 h | 1429 | 27 |
| Temperature | 23.67 h of 24.00 h | 0.03 h | 1429 | 27 |
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 | 98f02eddfa86f0ae59af425b7af934290954b3550a9496f7c0839fcafb96c561 |
| Admitted at | 2026-10-03T06:00:42.729740Z |
| 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.