PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-15:42:40
G01     67.5           32.5               11.0 +/-    1.32      18.4 +/-    1.32  0.040 / 0.040
G07     139.0          28.5               13.1 +/-    1.15      23.7 +/-    1.15  0.030 / 0.030
G11     51.5           28.3                9.8 +/-    1.24      17.8 +/-    1.24  0.080 / 0.090
G13     270.6          37.2               13.2 +/-    2.97      20.1 +/-    2.97  0.070 / 0.100
G15     302.2          14.6                7.9 +/-    2.07      19.8 +/-    2.07  0.160 / 0.210
G17     239.1          71.3               13.2 +/-    0.61      13.9 +/-    0.61  0.110 / 0.250
G18     46.7           16.6                9.8 +/-    1.98      23.6 +/-    1.98  0.050 / 0.080
G19     226.2          41.8               14.3 +/-    2.30      20.2 +/-    2.30  0.050 / 0.100
G28     24.4           58.6               10.5 +/-    1.43      12.0 +/-    1.43  0.060 / 0.110
G30     138.5          59.8               12.9 +/-    0.42      14.6 +/-    0.42  0.040 / 0.070