PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/26-19:27:50
G02     85.3           12.3               15.3 +/-    1.85      40.5 +/-    1.85  0.060 / 0.090
G05     44.7           34.4               12.1 +/-    0.65      19.5 +/-    0.65  0.060 / 0.090
G13     98.4           34.5               15.7 +/-    0.62      25.1 +/-    0.62  0.100 / 0.270
G15     142.9          39.7               16.8 +/-    1.19      24.5 +/-    1.19  0.090 / 0.210
G18     232.7          29.3               18.8 +/-    0.61      33.4 +/-    0.61  0.130 / 0.210
G20     359.4          82.0               14.4 +/-    0.70      14.5 +/-    0.70  0.120 / 0.200
G21     299.3          38.4               16.2 +/-    1.27      24.2 +/-    1.27  0.050 / 0.150
G25     205.5          22.4               17.3 +/-    1.66      35.8 +/-    1.66  0.040 / 0.130
G26     307.0          16.8               14.2 +/-    1.60      33.7 +/-    1.60  0.040 / 0.040
G29     110.9          84.3               13.9 +/-    0.43      14.0 +/-    0.43  0.040 / 0.040