PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/11-08:12:30
G03     252.5          70.7                3.1 +/-    0.63       3.3 +/-    0.63  0.050 / 0.050
G09     299.7          13.4                2.1 +/-    6.57       5.3 +/-    6.57  0.050 / 0.040
G14     94.7           18.3                2.6 +/-    1.28       5.9 +/-    1.28  0.040 / 0.040
G16     135.3          53.9                5.5 +/-    0.53       6.6 +/-    0.53  0.050 / 0.050
G22     200.4          60.8                3.6 +/-    0.74       4.0 +/-    0.74  0.110 / 0.260
G23     318.1          48.5                2.4 +/-    0.60       3.0 +/-    0.60  0.110 / 0.270
G26     78.7           53.7                3.5 +/-    0.66       4.2 +/-    0.66  0.130 / 0.330
G31     50.1           22.4                1.3 +/-    2.06       2.6 +/-    2.06  0.150 / 0.230