PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/16-11:57:50
G01     114.0          21.4                3.9 +/-    1.11       8.3 +/-    1.11  0.030 / 0.030
G07     93.9           63.2                3.7 +/-    1.00       4.1 +/-    1.00  0.040 / 0.040
G08     42.7           24.8                2.9 +/-    0.91       5.6 +/-    0.91  0.030 / 0.050
G09     174.5          18.3                4.1 +/-    1.43       9.5 +/-    1.43  0.030 / 0.040
G11     97.4           41.6                3.5 +/-    0.32       5.0 +/-    0.32  0.090 / 0.180
G13     314.5          24.0                2.6 +/-    1.07       5.3 +/-    1.07  0.110 / 0.150
G17     202.7          31.7                5.2 +/-    1.53       8.8 +/-    1.53  0.100 / 0.190
G18     87.6           22.6                2.1 +/-    1.42       4.2 +/-    1.42  0.100 / 0.240
G28     302.9          59.2                4.1 +/-    0.95       4.7 +/-    0.95  0.090 / 0.240
G30     353.8          72.2                3.1 +/-    0.39       3.3 +/-    0.39  0.070 / 0.260