PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/18-02:12:30
G02     226.0          69.8                5.6 +/-    0.66       6.0 +/-    0.66  0.060 / 0.070
G06     45.4           71.6                3.4 +/-    0.50       3.5 +/-    0.50  0.050 / 0.080
G12     319.8          41.4                4.7 +/-    0.62       6.7 +/-    0.62  0.040 / 0.050
G17     65.1           25.5                4.1 +/-    1.41       7.9 +/-    1.41  0.040 / 0.060
G19     48.3           43.8                5.2 +/-    1.17       7.1 +/-    1.17  0.050 / 0.050
G24     251.6          38.7                6.9 +/-    2.49      10.2 +/-    2.49  0.040 / 0.080
G28     127.1          10.4                5.1 +/-    2.10      14.2 +/-    2.10  0.310 / 0.480