PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/05-19:43:00
G02     32.8           55.6                9.1 +/-    0.51      10.7 +/-    0.51  0.030 / 0.040
G05     136.0          63.7               11.7 +/-    0.87      12.9 +/-    0.87  0.040 / 0.040
G06     55.5           12.6                7.1 +/-    1.57      18.7 +/-    1.57  0.030 / 0.050
G12     189.2          62.6               10.1 +/-    1.25      11.2 +/-    1.25  0.030 / 0.040
G19     100.5          11.2                8.9 +/-    1.47      24.3 +/-    1.47  0.040 / 0.060
G25     293.1          55.2                7.7 +/-    0.72       9.1 +/-    0.72  0.040 / 0.060
G29     308.0          28.2                7.5 +/-    1.80      13.6 +/-    1.80  0.110 / 0.320