PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/10-10:57:30
G07     317.4          51.9                3.9 +/-    1.43       4.8 +/-    1.43  0.030 / 0.050
G08     117.7          45.1                6.3 +/-    1.24       8.4 +/-    1.24  0.030 / 0.050
G09     245.1          84.4                4.6 +/-    0.47       4.6 +/-    0.47  0.090 / 0.120
G16     42.7           20.6                2.1 +/-    1.78       4.6 +/-    1.78  0.090 / 0.190
G23     148.9          59.0                6.2 +/-    0.64       7.1 +/-    0.64  0.050 / 0.080
G27     70.1           36.1                2.7 +/-    0.63       4.2 +/-    0.63  0.060 / 0.080
G28     227.6          18.0                3.4 +/-    3.67       7.9 +/-    3.67  0.040 / 0.060
G30     289.4          24.0                5.1 +/-    1.43      10.2 +/-    1.43  0.050 / 0.050