PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-17:28:10
G02     205.4          37.8               13.0 +/-    0.90      19.6 +/-    0.90  0.080 / 0.080
G06     142.9          74.7               12.3 +/-    0.84      12.7 +/-    0.84  0.070 / 0.090
G12     311.1          22.2                9.6 +/-    2.24      20.0 +/-    2.24  0.110 / 0.170
G17     40.5           45.6                9.6 +/-    1.05      12.8 +/-    1.05  0.070 / 0.140
G19     4.2            63.9               10.0 +/-    0.51      11.0 +/-    0.51  0.030 / 0.030
G24     291.1          41.0                7.0 +/-    6.92      10.1 +/-    6.92  0.030 / 0.030
G28     106.9          28.1               11.3 +/-    1.93      20.6 +/-    1.93  0.030 / 0.030