PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/19-14:13:10
G02     202.8          26.9                7.6 +/-    1.42      14.2 +/-    1.42  0.030 / 0.040
G06     162.9          64.2                8.6 +/-    1.41       9.4 +/-    1.41  0.040 / 0.030
G12     304.0          11.3               -0.8 +/-   18.60      -2.2 +/-   18.60  0.140 / 0.300
G17     27.1           55.7                5.8 +/-    0.47       6.8 +/-    0.47  0.120 / 0.360
G19     354.0          67.5                5.5 +/-    0.88       5.9 +/-    0.88  0.080 / 0.130
G24     303.3          34.6                6.5 +/-    1.13      10.4 +/-    1.13  0.080 / 0.110
G28     93.5           40.0                6.4 +/-    0.92       9.4 +/-    0.92  0.050 / 0.090