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               12.0 +/-    1.64      20.1 +/-    1.64  0.050 / 0.050
G07     139.0          28.5               12.7 +/-    1.86      22.9 +/-    1.86  0.040 / 0.050
G11     51.5           28.3                8.8 +/-    1.21      15.9 +/-    1.21  0.050 / 0.070
G13     270.6          37.2               13.5 +/-    1.24      20.7 +/-    1.24  0.050 / 0.090
G15     302.2          14.6                8.3 +/-    1.85      20.9 +/-    1.85  0.040 / 0.050
G17     239.1          71.3               13.5 +/-    0.94      14.1 +/-    0.94  0.040 / 0.050
G18     46.7           16.6                8.8 +/-    0.99      21.0 +/-    0.99  0.060 / 0.140
G19     226.2          41.8               16.4 +/-    1.11      23.2 +/-    1.11  0.060 / 0.130
G28     24.4           58.6               12.6 +/-    0.56      14.5 +/-    0.56  0.070 / 0.150
G30     138.5          59.8               12.4 +/-    0.66      14.1 +/-    0.66  0.060 / 0.170