PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-15:28:00
G02     319.1          79.3                4.6 +/-    0.42       4.6 +/-    0.42  0.140 / 0.170
G05     167.2          31.2                7.2 +/-    1.76      12.2 +/-    1.76  0.210 / 0.190
G06     41.7           39.5                3.2 +/-    1.43       4.7 +/-    1.43  0.020 / 0.020
G12     310.2          74.2                4.3 +/-    0.40       4.4 +/-    0.40  0.020 / 0.020
G17     86.4           10.2                6.4 +/-    5.17      17.7 +/-    5.17  0.070 / 0.080
G19     72.0           31.3                5.6 +/-    2.17       9.5 +/-    2.17  0.060 / 0.070
G24     226.1          22.2                7.5 +/-    2.37      15.6 +/-    2.37  0.110 / 0.120
G25     316.9          30.7                6.1 +/-    1.31      10.6 +/-    1.31  0.110 / 0.140