PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/07-02:57:40
G02     225.9          69.8                5.5 +/-    0.75       5.8 +/-    0.75  0.160 / 0.480
G06     45.5           72.4                4.8 +/-    0.41       5.0 +/-    0.41  0.290 / 0.540
G12     319.8          41.5                4.4 +/-    1.20       6.3 +/-    1.20  0.030 / 0.060
G17     65.2           25.3                3.5 +/-    0.55       6.8 +/-    0.55  0.060 / 0.080
G19     48.2           43.9                4.2 +/-    0.67       5.8 +/-    0.67  0.060 / 0.090
G24     251.3          38.7                5.5 +/-    1.08       8.2 +/-    1.08  0.060 / 0.100
G28     127.1          10.3                5.2 +/-    2.27      14.3 +/-    2.27  0.040 / 0.060