GOES classification: A,B,C,M,X (log scale, X10 = 10⁻⁴ W/m²)
Typical: 400–3000 km/s. Fastest: ~3500 km/s. Earth transit: 1–3 days
Planetary geomagnetic activity: 0–9. Kp≥5 = geomagnetic storm (G1+)
Sweet-Parker rate ~ (η/L)^½; Petschek: much faster due to slow-mode shocks