PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-14:42:40
G01     66.7           32.3                7.9 +/-    0.82      13.2 +/-    0.82  0.040 / 0.040
G07     139.3          27.8                9.4 +/-    1.94      17.2 +/-    1.94  0.040 / 0.040
G11     51.0           27.6                5.8 +/-    0.70      10.7 +/-    0.70  0.060 / 0.100
G13     269.7          37.1                9.7 +/-    1.37      14.8 +/-    1.37  0.060 / 0.090
G15     302.1          14.4                4.9 +/-    1.34      12.4 +/-    1.34  0.070 / 0.140
G17     241.2          72.6               10.4 +/-    1.11      10.8 +/-    1.11  0.070 / 0.160
G18     46.1           16.1                6.5 +/-    1.94      15.9 +/-    1.94  0.040 / 0.050
G19     226.6          42.0               11.9 +/-    1.44      16.8 +/-    1.44  0.040 / 0.060
G28     25.3           58.5                9.8 +/-    0.88      11.3 +/-    0.88  0.070 / 0.090
G30     139.1          59.6               10.3 +/-    0.75      11.7 +/-    0.75  0.050 / 0.120