PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-12:12:30
G07     323.5          54.2                4.7 +/-    0.53       5.6 +/-    0.53  0.150 / 0.170
G08     109.3          49.5                6.9 +/-    0.46       8.8 +/-    0.46  0.180 / 0.120
G09     199.4          79.2                6.5 +/-    0.44       6.6 +/-    0.44  0.050 / 0.040
G16     45.1           10.3                5.6 +/-    2.16      15.6 +/-    2.16  0.030 / 0.030
G23     152.6          47.4                7.0 +/-    0.61       9.1 +/-    0.61  0.040 / 0.080
G27     62.1           34.7                6.9 +/-    1.20      11.0 +/-    1.20  0.050 / 0.080
G28     232.4          24.1                6.6 +/-    2.75      13.1 +/-    2.75  0.150 / 0.320
G30     296.3          30.1                5.7 +/-    2.14      10.0 +/-    2.14  0.120 / 0.560