PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-12:58:00
G02     202.6          22.3                3.7 +/-    1.73       7.7 +/-    1.73  0.080 / 0.100
G06     166.0          60.8                5.8 +/-    0.56       6.6 +/-    0.56  0.090 / 0.080
G12     303.6          11.8               -0.2 +/-    9.71      -0.6 +/-    9.71  0.270 / 0.290
G17     29.6           54.3                3.4 +/-    0.81       4.1 +/-    0.81  0.190 / 0.340
G19     325.0          69.5                2.9 +/-    1.06       3.1 +/-    1.06  0.240 / 0.530
G24     304.1          35.4                2.5 +/-    2.13       4.0 +/-    2.13  0.270 / 0.540
G28     93.3           37.3                5.5 +/-    0.80       8.3 +/-    0.80  0.040 / 0.030
G30     158.2          11.0                4.7 +/-    3.31      12.8 +/-    3.31  0.030 / 0.030