PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/19-11:12:50
G01     100.7          27.5                4.1 +/-    1.35       7.6 +/-    1.35  0.030 / 0.050
G07     114.8          51.8                5.5 +/-    0.62       6.8 +/-    0.62  0.030 / 0.050
G08     42.0           20.1                3.5 +/-    2.64       7.7 +/-    2.64  0.060 / 0.080
G11     82.6           43.9                5.4 +/-    1.09       7.5 +/-    1.09  0.040 / 0.080
G13     304.8          32.7                1.9 +/-    2.69       3.2 +/-    2.69  0.080 / 0.150
G17     207.9          39.0                5.4 +/-    1.35       8.1 +/-    1.35  0.060 / 0.120
G18     74.2           24.6                5.1 +/-    1.21      10.1 +/-    1.21  0.250 / 0.310
G19     209.4          19.0               -3.0 +/-    3.39      -6.9 +/-    3.39  0.310 / 0.170
G28     314.0          59.4                3.7 +/-    1.08       4.2 +/-    1.08  0.210 / 0.300
G30     47.0           80.0                5.2 +/-    0.40       5.3 +/-    0.40  0.020 / 0.020