PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-15:27:50
G01     58.5           30.0                7.9 +/-    0.58      13.8 +/-    0.58  0.040 / 0.050
G07     142.9          20.9               11.5 +/-    1.41      24.7 +/-    1.41  0.040 / 0.050
G11     47.3           21.9                5.7 +/-    1.24      12.0 +/-    1.24  0.060 / 0.100
G13     260.4          34.8                9.0 +/-    1.60      14.4 +/-    1.60  0.060 / 0.070
G15     294.9          15.3                7.2 +/-    2.09      17.7 +/-    2.09  0.040 / 0.060
G17     266.3          77.4                9.7 +/-    0.75      10.0 +/-    0.75  0.030 / 0.060
G18     41.2           11.6                6.5 +/-    2.31      17.6 +/-    2.31  0.070 / 0.270
G19     233.6          49.0               12.1 +/-    0.82      15.4 +/-    0.82  0.080 / 0.280
G28     38.1           56.2                8.2 +/-    0.55       9.7 +/-    0.55  0.060 / 0.120
G30     145.0          51.7               11.1 +/-    1.77      13.7 +/-    1.77  0.060 / 0.150