Solar wind, measured.
HISTORICAL DAY · 21 AUG 2026 · THE HERO REMAINS 13 OCT 2026
SOLAR WIND · 21 AUG 2026 · OBSERVED DAY · PUBLISHED 14 OCT 2026 06:37 UTC
- Speed
- 489 km/s
- Proton density
- 3.0 cm⁻³
- Temperature
- 127,000 K
Motion: speed · Population: density · Colour: temperature · Coverage 99.1%
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) | 488.64823857512811832424484027405288343464081688081 | 436.8720284325026937054928621191667480142150582304 | 563.1534569419574424672515444493318621510587673175 | 17.982517268859409932934971880122532073037125733568 |
| Proton density (cm⁻³) | 2.9671734878917306059345070821850096370636736914114 | 1.55800545215606689453125 | 5.18553638458251953125 | 0.48704958460668551709019089121096280352807267092229 |
| Temperature (K) | 126748.54912614030051085304820233868266273692710433 | 66421.859375 | 221793.75 | 30509.469281893865463280573025887674346690804579061 |
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 | 23.80 h of 24.00 h | 0.02 h | 1437 | 1 |
| Proton density | 23.80 h of 24.00 h | 0.02 h | 1437 | 1 |
| Temperature | 23.80 h of 24.00 h | 0.02 h | 1437 | 1 |
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 | 1 |
| Knowledge cutoff | 2026-10-01T10:44:13.096399Z |
| Admission id | ab7e050032c006c681095b2253d82c9a19fbbe4265187740cf9bea8df97f09eb |
| Admitted at | 2026-10-01T13:06:12.627686Z |
| Known to serving at | 2026-10-01T16:07:01.284949Z |
| 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.