PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/30-12:28:10
G02     217.1          59.8                5.7 +/-    0.84       6.4 +/-    0.84  0.060 / 0.070
G06     55.3           72.7                4.2 +/-    0.57       4.4 +/-    0.57  0.060 / 0.070
G12     318.6          37.8                2.5 +/-    0.94       3.7 +/-    0.94  0.040 / 0.080
G17     56.5           33.1                2.1 +/-    1.87       3.5 +/-    1.87  0.050 / 0.080
G19     41.7           47.1                3.4 +/-    1.37       4.4 +/-    1.37  0.040 / 0.030
G24     266.2          40.8                5.7 +/-    1.70       8.1 +/-    1.70  0.040 / 0.030
G28     120.9          19.8                3.5 +/-    1.77       7.8 +/-    1.77  0.070 / 0.060