PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-13:58:00
G01     118.4          17.4                7.2 +/-    1.45      16.9 +/-    1.45  0.090 / 0.100
G07     87.0           63.0                8.9 +/-    0.60       9.9 +/-    0.60  0.080 / 0.090
G08     45.7           33.6                7.2 +/-    1.80      11.8 +/-    1.80  0.050 / 0.080
G09     177.5          27.5                7.4 +/-    1.45      13.6 +/-    1.45  0.050 / 0.080
G11     106.6          40.7                8.9 +/-    0.54      12.7 +/-    0.54  0.030 / 0.040
G13     317.3          20.3                5.8 +/-    2.90      12.6 +/-    2.90  0.030 / 0.040
G17     201.6          22.1                7.8 +/-    2.34      16.3 +/-    2.34  0.230 / 0.130
G18     93.2           20.7                8.1 +/-    2.06      17.5 +/-    2.06  0.260 / 0.230
G28     284.0          53.4                8.9 +/-    2.31      10.8 +/-    2.31  0.080 / 0.120
G30     350.9          70.2                7.4 +/-    0.65       7.8 +/-    0.65  0.110 / 0.130