PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-11:12:50
G01     48.4           24.0                3.6 +/-    1.49       7.2 +/-    1.49  0.190 / 0.330
G06     176.3          26.0                4.6 +/-    1.75       8.7 +/-    1.75  0.160 / 0.390
G07     145.8          10.3                4.8 +/-    2.76      13.3 +/-    2.76  0.030 / 0.030
G11     44.7           16.2                2.0 +/-    2.37       4.9 +/-    2.37  0.030 / 0.030
G13     248.4          30.8                5.0 +/-    1.60       8.6 +/-    1.60  0.040 / 0.030
G15     283.8          15.3                3.3 +/-    2.02       8.2 +/-    2.02  0.040 / 0.030
G17     303.9          78.4                4.6 +/-    0.67       4.7 +/-    0.67  0.140 / 0.150
G19     247.8          62.4                5.0 +/-    0.43       5.6 +/-    0.43  0.120 / 0.150
G28     42.9           57.0                3.5 +/-    1.09       4.0 +/-    1.09  0.050 / 0.050
G30     150.5          42.3                5.7 +/-    0.80       8.0 +/-    0.80  0.040 / 0.050