PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-13:42:40
G01     126.8          10.8                2.9 +/-   31.74       7.9 +/-   31.74  0.120 / 0.090
G07     61.7           67.4                8.8 +/-    0.86       9.5 +/-    0.86  0.060 / 0.110
G08     52.3           42.0                6.5 +/-    0.83       9.2 +/-    0.83  0.060 / 0.110
G09     178.9          38.3               10.0 +/-    1.06      15.0 +/-    1.06  0.060 / 0.090
G11     118.9          35.6                9.2 +/-    0.59      14.5 +/-    0.59  0.040 / 0.040
G13     320.9          11.9               -4.1 +/-   16.17     -11.1 +/-   16.17  0.040 / 0.040
G17     200.0          12.0                2.3 +/-   18.37       6.1 +/-   18.37  0.250 / 0.420
G18     103.3          16.2                8.6 +/-    2.15      20.8 +/-    2.15  0.120 / 0.350
G28     268.9          47.8                8.0 +/-    2.31      10.4 +/-    2.31  0.070 / 0.080
G30     334.8          61.8                7.5 +/-    0.63       8.4 +/-    0.63  0.080 / 0.080