PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-14:12:30
G07     11.5           67.6                7.8 +/-    0.80       8.4 +/-    0.80  0.030 / 0.040
G08     65.5           49.2                8.0 +/-    0.60      10.1 +/-    0.60  0.030 / 0.040
G09     178.9          50.2               10.2 +/-    2.11      12.9 +/-    2.11  0.070 / 0.050
G11     131.3          26.6                8.5 +/-    0.90      16.1 +/-    0.90  0.040 / 0.060
G23     159.3          19.0                8.7 +/-    1.71      19.5 +/-    1.71  0.080 / 0.110
G27     41.1           18.3                7.6 +/-    1.30      17.5 +/-    1.30  0.080 / 0.130
G28     257.1          44.5                7.5 +/-    1.36      10.2 +/-    1.36  0.060 / 0.110
G30     318.6          49.2                8.1 +/-    0.54      10.3 +/-    0.54  0.060 / 0.070