PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-21:12:50
G02     54.4           36.9                9.0 +/-    1.12      13.8 +/-    1.12  0.040 / 0.060
G05     67.0           65.1                8.9 +/-    0.57       9.7 +/-    0.57  0.050 / 0.060
G12     186.4          40.0               11.5 +/-    0.82      16.8 +/-    0.82  0.050 / 0.080
G13     131.0          11.3               10.8 +/-    1.72      29.2 +/-    1.72  0.050 / 0.080
G21     267.1          13.3               13.2 +/-    3.43      34.3 +/-    3.43  0.180 / 0.370
G25     247.0          55.4               11.0 +/-    1.51      13.0 +/-    1.51  0.210 / 0.340
G29     325.8          50.2                9.7 +/-    0.75      12.2 +/-    0.75  0.160 / 0.350