PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-04:28:00
G02     31.0           57.6                3.6 +/-    0.57       4.2 +/-    0.57  0.030 / 0.040
G05     143.2          58.7                7.4 +/-    0.62       8.5 +/-    0.62  0.030 / 0.050
G06     51.2           20.1                2.3 +/-    0.67       5.1 +/-    0.67  0.110 / 0.220
G12     210.2          73.2                4.8 +/-    0.86       5.0 +/-    0.86  0.140 / 0.280
G19     96.3           12.9                4.7 +/-    2.86      12.3 +/-    2.86  0.040 / 0.040
G25     303.8          49.4                3.1 +/-    0.93       3.9 +/-    0.93  0.020 / 0.040
G29     304.2          24.8                3.9 +/-    1.47       7.7 +/-    1.47  0.030 / 0.050