PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-15:28:10
G02     202.9          26.9               11.1 +/-    2.14      20.9 +/-    2.14  0.090 / 0.080
G06     160.8          65.2                9.9 +/-    0.70      10.7 +/-    0.70  0.060 / 0.070
G12     306.1          15.5                5.0 +/-    1.10      12.2 +/-    1.10  0.170 / 0.220
G17     32.6           51.9                8.6 +/-    0.99      10.6 +/-    0.99  0.110 / 0.280
G19     338.6          68.7                7.7 +/-    0.44       8.2 +/-    0.44  0.030 / 0.030
G24     301.7          36.7                7.0 +/-    1.68      10.7 +/-    1.68  0.030 / 0.030
G28     97.2           34.6                9.0 +/-    1.56      14.4 +/-    1.56  0.040 / 0.030