PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-02:27:50
G01     68.2           32.6                3.2 +/-    1.18       5.4 +/-    1.18  0.030 / 0.040
G07     138.7          29.1                5.6 +/-    0.86      10.0 +/-    0.86  0.030 / 0.040
G11     53.7           31.0                3.1 +/-    0.90       5.4 +/-    0.90  0.040 / 0.030
G13     272.7          36.9                5.3 +/-    2.51       8.1 +/-    2.51  0.030 / 0.030
G15     299.9          16.2                2.1 +/-    2.59       5.2 +/-    2.59  0.060 / 0.090
G17     237.5          69.9                4.5 +/-    0.17       4.8 +/-    0.17  0.050 / 0.090
G19     226.1          44.7                5.7 +/-    1.99       7.7 +/-    1.99  0.060 / 0.130
G28     24.7           58.5                4.7 +/-    1.76       5.5 +/-    1.76  0.110 / 0.120
G30     137.2          55.2                4.9 +/-    0.41       5.8 +/-    0.41  0.050 / 0.070