PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/14-13:28:00
G01     71.9           33.0                5.7 +/-    0.53       9.3 +/-    0.53  0.030 / 0.040
G07     136.8          31.8                7.2 +/-    1.14      12.1 +/-    1.14  0.030 / 0.030
G11     53.6           30.4                5.1 +/-    1.04       8.9 +/-    1.04  0.040 / 0.100
G13     275.3          37.8                6.8 +/-    0.97      10.3 +/-    0.97  0.040 / 0.110
G15     306.4          13.2                2.9 +/-    2.21       7.5 +/-    2.21  0.060 / 0.100
G17     232.1          69.6                6.3 +/-    1.24       6.7 +/-    1.24  0.040 / 0.090
G18     49.3           18.3                4.4 +/-    0.83      10.2 +/-    0.83  0.070 / 0.190
G19     223.2          37.6                6.3 +/-    1.31       9.5 +/-    1.31  0.080 / 0.160
G28     17.4           59.6                5.6 +/-    0.92       6.4 +/-    0.92  0.060 / 0.130
G30     134.4          64.5                6.8 +/-    0.96       7.5 +/-    0.96  0.050 / 0.130