PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/18-05:57:50
G01     68.4           31.7                3.9 +/-    0.53       6.6 +/-    0.53  0.030 / 0.040
G07     137.1          30.8                7.0 +/-    0.64      12.1 +/-    0.64  0.030 / 0.030
G11     55.0           34.1                3.1 +/-    0.62       5.1 +/-    0.62  0.120 / 0.270
G13     272.8          38.8                7.0 +/-    0.68      10.3 +/-    0.68  0.110 / 0.240
G15     300.3          16.3                3.2 +/-    2.70       7.7 +/-    2.70  0.050 / 0.060
G17     231.5          69.5                4.7 +/-    1.10       4.9 +/-    1.10  0.040 / 0.070
G19     223.1          44.5                5.7 +/-    0.80       7.8 +/-    0.80  0.060 / 0.120
G28     2.4            61.4                2.1 +/-    0.88       2.4 +/-    0.88  0.060 / 0.130
G30     136.2          65.7                7.3 +/-    0.66       7.9 +/-    0.66  0.040 / 0.050