PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/30-07:43:10
G02     14.8           69.8                2.3 +/-    0.74       2.5 +/-    0.74  0.020 / 0.030
G05     158.4          43.8                7.4 +/-    0.61      10.1 +/-    0.61  0.030 / 0.030
G06     43.8           34.8                1.3 +/-    0.34       2.1 +/-    0.34  0.040 / 0.050
G12     285.5          77.5                3.3 +/-    1.09       3.4 +/-    1.09  0.030 / 0.060
G19     84.2           21.0                4.7 +/-    2.46      10.0 +/-    2.46  0.060 / 0.090
G24     222.2          16.3                4.0 +/-    2.67       9.7 +/-    2.67  0.060 / 0.090
G25     314.7          37.2                3.5 +/-    1.11       5.3 +/-    1.11  0.130 / 0.260
G29     294.2          16.4                2.5 +/-    1.71       5.9 +/-    1.71  0.130 / 0.210