# Global Ionospheric Radio Observatory # GIRO Tabulated Ionospheric Characteristics, Version 1.0 Revision B # Generated by DIDBGetValues on 2026-04-15T19:32:24.784Z # # Location: GEO 42.6N 288.5E, URSI-Code MHJ45 MILLSTONE HILL # Instrument: Ionosonde, Model: DPS-4D # # Query for measurement intervals of time: # 2026-04-15T16:00:00.000Z - 2026-04-15T19:00:00.000Z # # Data Selection: # CS is Autoscaling Confidence Score (from 0 to 100, 999 if manual scaling, -1 if unknown) # foF2 [MHz] - F2 layer critical frequency # MUFD [MHz] - Maximum usable frequency for ground distance D # foEs [MHz] - Es layer critical frequency # foE [MHz] - E layer critical frequency # hmF2 [km] - Peak height F2-layer # Distance D for MUF calculations: 3000 km # # All GIRO measurements are released under CC-BY-NC-SA 4.0 license # Please follow the Lowell GIRO Data Center RULES OF THE ROAD # https://ulcar.uml.edu/DIDBase/RulesOfTheRoadForDIDBase.htm # Requires acknowledgement of MHJ45 data provider # #Time CS foF2 QD MUFD QD foEs QD foE QD hmF2 QD 2026-04-15T16:00:00.000Z 60 6.856 // 23.63 // --- __ 3.50 // 217.2 // 2026-04-15T16:07:30.000Z 90 6.763 // 21.10 // 3.42 // 3.47 // 260.3 // 2026-04-15T16:15:00.000Z 70 6.863 // 22.72 // 3.50 // 3.50 // 225.1 // 2026-04-15T16:22:30.000Z 70 6.863 // 22.39 // 3.45 // 3.45 // 231.8 // 2026-04-15T16:30:00.000Z 75 6.775 // 22.72 // --- __ 3.30 // 224.3 // 2026-04-15T16:37:30.000Z 70 6.913 // 23.39 // 3.08 // 3.15 // 226.6 // 2026-04-15T16:45:00.000Z 60 6.925 // 22.41 // 3.05 // 3.13 // 226.6 // 2026-04-15T16:52:30.000Z 70 6.975 // 23.32 // --- __ 3.30 // 212.0 // 2026-04-15T17:00:00.000Z 90 6.907 // 21.87 // --- __ 3.20 // 232.4 // 2026-04-15T17:07:30.000Z 60 7.063 // 23.52 // 3.13 // 3.15 // 236.4 // 2026-04-15T17:15:00.000Z 75 7.225 // 23.38 // 3.20 // 3.38 // 244.2 // 2026-04-15T17:22:30.000Z 70 7.138 // 23.45 // 3.40 // 3.35 // 234.8 // 2026-04-15T17:30:00.000Z 75 7.063 // 22.66 // --- __ 3.35 // 238.8 // 2026-04-15T17:37:30.000Z 70 7.025 // 22.19 // 3.08 // 3.28 // 240.9 // 2026-04-15T17:45:00.000Z 70 7.138 // 22.25 // --- __ 3.08 // 256.2 // 2026-04-15T17:52:30.000Z 70 7.138 // 22.97 // 3.13 // 2.97 // 242.6 // 2026-04-15T18:00:00.000Z 80 7.113 // 23.00 // 3.08 // 3.10 // 242.0 // 2026-04-15T18:07:30.000Z 80 7.088 // 22.76 // 3.35 // 3.13 // 246.0 // 2026-04-15T18:15:00.000Z 70 7.150 // 22.09 // 3.42 // 2.92 // 266.7 // 2026-04-15T18:22:30.000Z 75 7.200 // 22.37 // 3.45 // 2.80 // 262.0 // 2026-04-15T18:30:00.000Z 70 7.225 // 23.34 // 3.22 // 2.85 // 246.5 // 2026-04-15T18:37:30.000Z 75 7.213 // 23.03 // --- __ 3.17 // 250.9 // 2026-04-15T18:45:00.000Z 75 7.338 // 22.77 // 3.20 // 2.72 // 263.5 // 2026-04-15T18:52:30.000Z 75 7.413 // 23.50 // 3.33 // 3.10 // 256.5 // 2026-04-15T19:00:00.000Z 75 7.400 // 23.64 // 3.50 // 3.15 // 249.4 //