PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/01-17:12:50
G01     50.4           25.7                9.4 +/-    1.55      18.0 +/-    1.55  0.130 / 0.360
G06     176.7          26.0               12.3 +/-    1.49      23.6 +/-    1.49  0.080 / 0.320
G07     146.2          13.0               12.6 +/-    3.32      32.9 +/-    3.32  0.040 / 0.070
G11     44.7           15.3                8.3 +/-    1.71      20.6 +/-    1.71  0.040 / 0.070
G13     250.8          30.6               11.8 +/-    1.30      20.4 +/-    1.30  0.070 / 0.140
G15     286.0          15.2                8.8 +/-    2.09      21.7 +/-    2.09  0.060 / 0.120
G17     307.5          78.4               11.8 +/-    0.57      12.0 +/-    0.57  0.170 / 0.490
G19     244.6          57.0               12.3 +/-    0.74      14.4 +/-    0.74  0.160 / 0.380
G28     51.9           53.1               10.0 +/-    0.39      12.2 +/-    0.39  0.040 / 0.070
G30     149.7          42.2               13.4 +/-    0.98      18.9 +/-    0.98  0.040 / 0.070