PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-11:43:10
G01     118.0          18.6                3.4 +/-    1.71       7.8 +/-    1.71  0.030 / 0.030
G07     84.0           65.8                5.0 +/-    0.51       5.4 +/-    0.51  0.030 / 0.020
G08     43.9           28.5                3.5 +/-    1.63       6.3 +/-    1.63  0.030 / 0.030
G09     175.1          22.5                3.9 +/-    0.90       8.1 +/-    0.90  0.020 / 0.030
G11     103.4          40.4                4.3 +/-    0.85       6.2 +/-    0.85  0.230 / 0.340
G13     317.0          20.7                2.2 +/-    1.95       4.8 +/-    1.95  0.140 / 0.300
G17     201.4          27.2                4.0 +/-    1.13       7.4 +/-    1.13  0.130 / 0.150
G18     92.3           21.2                4.4 +/-    1.58       9.4 +/-    1.58  0.130 / 0.190
G28     294.5          57.7                3.1 +/-    1.23       3.6 +/-    1.23  0.130 / 0.190
G30     345.3          68.5                3.9 +/-    0.58       4.1 +/-    0.58  0.130 / 0.200