PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-02:57:50
G02     339.6          80.0                2.6 +/-    0.43       2.7 +/-    0.43  0.030 / 0.030
G05     164.3          31.6                8.1 +/-    2.04      13.7 +/-    2.04  0.020 / 0.030
G06     40.8           43.6                2.8 +/-    0.80       3.8 +/-    0.80  0.080 / 0.090
G12     315.4          67.4                5.4 +/-    0.62       5.8 +/-    0.62  0.060 / 0.080
G17     82.3           16.3                4.8 +/-    2.23      11.5 +/-    2.23  0.150 / 0.280
G19     72.1           29.5                4.6 +/-    1.53       8.1 +/-    1.53  0.160 / 0.190
G24     231.0          24.8                8.2 +/-    1.74      16.2 +/-    1.74  0.090 / 0.210
G25     317.7          25.3                5.2 +/-    1.73      10.0 +/-    1.73  0.150 / 0.210