PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-10:58:00
G01     127.3          11.3                4.4 +/-    2.84      12.0 +/-    2.84  0.120 / 0.270
G07     51.9           69.5                5.2 +/-    0.68       5.6 +/-    0.68  0.110 / 0.290
G08     49.6           37.9                2.7 +/-    0.83       4.1 +/-    0.83  0.030 / 0.040
G09     176.1          34.1                4.6 +/-    2.35       7.4 +/-    2.35  0.030 / 0.030
G11     117.1          35.2                5.5 +/-    1.11       8.7 +/-    1.11  0.050 / 0.080
G13     321.1          11.6                0.2 +/-   11.04       0.5 +/-   11.04  0.050 / 0.080
G17     199.2          15.9                4.3 +/-    1.61      10.4 +/-    1.61  0.030 / 0.040
G18     103.5          16.4                4.4 +/-    1.31      10.5 +/-    1.31  0.030 / 0.040
G28     275.1          52.5                5.6 +/-    0.92       6.8 +/-    0.92  0.100 / 0.250
G30     330.2          58.7                3.3 +/-    1.56       3.8 +/-    1.56  0.100 / 0.280