PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/28-18:58:10
G02     51.8           40.1                7.7 +/-    1.08      11.2 +/-    1.08  0.030 / 0.020
G05     73.4           67.2                9.2 +/-    0.23       9.8 +/-    0.23  0.030 / 0.030
G12     182.2          36.7                9.6 +/-    0.96      14.8 +/-    0.96  0.250 / 0.410
G13     133.4          10.3               -0.4 +/-   25.59      -1.1 +/-   25.59  0.340 / 0.390
G21     265.1          11.7                8.4 +/-    4.46      22.6 +/-    4.46  0.040 / 0.060
G25     247.2          56.3                8.5 +/-    1.72      10.0 +/-    1.72  0.040 / 0.080
G29     322.6          46.3                8.9 +/-    1.07      11.8 +/-    1.07  0.040 / 0.050