PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/08-13:42:40
G01     47.7           23.5                6.8 +/-    1.31      13.7 +/-    1.31  0.040 / 0.040
G06     176.4          26.9                8.8 +/-    1.37      16.4 +/-    1.37  0.050 / 0.050
G11     44.2           14.4                5.6 +/-    1.38      14.0 +/-    1.38  0.030 / 0.030
G13     247.3          30.1                9.0 +/-    1.40      15.7 +/-    1.40  0.030 / 0.030
G15     282.2          15.2                5.0 +/-    2.01      12.4 +/-    2.01  0.040 / 0.040
G17     301.1          77.7                7.8 +/-    0.40       8.0 +/-    0.40  0.040 / 0.040
G19     249.8          63.0                8.7 +/-    0.77       9.7 +/-    0.77  0.130 / 0.430
G28     46.0           56.2                7.4 +/-    0.41       8.7 +/-    0.41  0.140 / 0.380
G30     150.5          39.5                8.8 +/-    0.95      12.9 +/-    0.95  0.130 / 0.150