PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/30-16:43:00
G01     102.1          27.2               11.1 +/-    0.83      20.7 +/-    0.83  0.040 / 0.070
G07     115.1          49.5               10.3 +/-    0.35      13.1 +/-    0.35  0.040 / 0.060
G08     41.6           17.5                8.7 +/-    0.65      20.3 +/-    0.65  0.030 / 0.060
G09     174.8          11.4               10.3 +/-    1.76      28.0 +/-    1.76  0.030 / 0.060
G11     82.0           43.0               10.2 +/-    0.44      14.2 +/-    0.44  0.200 / 0.370
G13     305.7          32.0                9.7 +/-    1.74      16.3 +/-    1.74  0.170 / 0.370
G17     207.0          41.1                9.8 +/-    0.94      14.0 +/-    0.94  0.090 / 0.140
G18     74.2           24.2                9.2 +/-    1.12      18.4 +/-    1.12  0.110 / 0.190
G28     315.5          59.9                9.5 +/-    0.80      10.8 +/-    0.80  0.090 / 0.140
G30     63.1           78.7                9.3 +/-    0.93       9.5 +/-    0.93  0.090 / 0.140