PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/08-07:27:30
G07     30.9           69.2                6.8 +/-    0.63       7.2 +/-    0.63  0.040 / 0.050
G08     56.2           43.6                5.9 +/-    0.76       8.2 +/-    0.76  0.040 / 0.050
G09     174.3          39.6                9.1 +/-    0.68      13.3 +/-    0.68  0.040 / 0.030
G11     124.8          30.8                7.0 +/-    1.03      12.1 +/-    1.03  0.030 / 0.030
G18     109.3          12.6                5.0 +/-    2.20      13.2 +/-    2.20  0.110 / 0.350
G23     161.1          16.6                5.5 +/-    2.43      13.2 +/-    2.43  0.110 / 0.350
G27     39.4           15.0                3.4 +/-    1.61       8.5 +/-    1.61  0.090 / 0.260
G28     263.3          47.2                9.3 +/-    0.65      12.2 +/-    0.65  0.110 / 0.240
G30     322.6          52.5                7.6 +/-    1.43       9.3 +/-    1.43  0.060 / 0.170