PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-21:27:50
G01     106.3          26.0               12.2 +/-    1.22      23.2 +/-    1.22  0.100 / 0.160
G07     107.8          58.1               12.9 +/-    0.34      14.9 +/-    0.34  0.100 / 0.150
G08     42.5           23.9                8.5 +/-    0.84      17.1 +/-    0.84  0.040 / 0.060
G09     175.3          13.6               17.4 +/-    1.14      44.8 +/-    1.14  0.040 / 0.060
G11     90.7           43.4               13.1 +/-    0.35      18.1 +/-    0.35  0.040 / 0.080
G13     309.3          28.7                9.9 +/-    1.08      17.9 +/-    1.08  0.040 / 0.070
G17     207.3          34.9               15.7 +/-    1.88      24.9 +/-    1.88  0.050 / 0.110
G18     80.1           24.5               12.2 +/-    1.15      24.2 +/-    1.15  0.050 / 0.080
G28     320.5          61.2               12.3 +/-    0.46      13.8 +/-    0.46  0.060 / 0.160
G30     40.6           78.4               11.7 +/-    0.79      11.9 +/-    0.79  0.060 / 0.140