PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/14-06:58:10
G02     66.4           26.1                1.5 +/-    1.93       2.9 +/-    1.93  0.030 / 0.030
G05     50.1           53.1                4.5 +/-    0.57       5.5 +/-    0.57  0.030 / 0.040
G12     184.4          26.2                4.4 +/-    0.69       8.3 +/-    0.69  0.080 / 0.110
G13     123.1          19.9                7.4 +/-    1.49      16.3 +/-    1.49  0.070 / 0.120
G15     158.8          18.4                4.5 +/-    2.23      10.3 +/-    2.23  0.250 / 0.390
G20     216.8          57.7                6.4 +/-    1.10       7.4 +/-    1.10  0.430 / 0.330
G21     277.5          22.6                4.2 +/-    2.12       8.7 +/-    2.12  0.060 / 0.050
G25     228.9          46.7                4.3 +/-    2.86       5.7 +/-    2.86  0.050 / 0.050
G29     333.7          62.1                3.2 +/-    0.49       3.6 +/-    0.49  0.070 / 0.110