PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/18-05:28:00
G01     220.5          12.7                3.8 +/-    1.60       9.9 +/-    1.60  0.100 / 0.280
G03     270.8          70.2                4.2 +/-    0.57       4.5 +/-    0.57  0.120 / 0.300
G09     297.3          11.3                2.5 +/-   22.82       6.8 +/-   22.82  0.040 / 0.050
G14     90.7           21.8                1.7 +/-    0.69       3.6 +/-    0.69  0.030 / 0.050
G16     139.0          50.5                5.0 +/-    0.92       6.3 +/-    0.92  0.040 / 0.050
G22     208.3          65.6                4.2 +/-    0.93       4.6 +/-    0.93  0.030 / 0.050
G23     313.9          44.4                2.3 +/-    1.36       3.2 +/-    1.36  0.130 / 0.620
G26     85.7           54.1                2.7 +/-    0.41       3.2 +/-    0.41  0.120 / 0.430
G31     48.3           25.6                3.3 +/-    0.71       6.3 +/-    0.71  0.040 / 0.070