PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-09:12:40
G07     27.8           69.1               -4.3 +/-    9.70      -4.5 +/-    9.70  0.070 / 0.220
G08     57.3           44.4               -1.8 +/-    7.82      -2.4 +/-    7.82  0.070 / 0.180
G09     175.2          41.3                1.0 +/-    8.96       1.4 +/-    8.96  0.050 / 0.050
G11     125.7          30.3                0.7 +/-    8.80       1.3 +/-    8.80  0.040 / 0.050
G18     110.4          12.2                1.0 +/-    7.91       2.5 +/-    7.91  0.120 / 0.140
G23     160.8          16.7                0.5 +/-   11.37       1.1 +/-   11.37  0.040 / 0.050
G27     39.5           15.2                1.9 +/-    0.90       4.7 +/-    0.90  0.100 / 0.340
G28     262.8          47.1               -0.4 +/-    9.52      -0.5 +/-    9.52  0.110 / 0.370
G30     322.1          52.1               -1.7 +/-   10.27      -2.1 +/-   10.27  0.030 / 0.030