PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-12:28:00
G07     327.7          56.0                4.0 +/-    0.40       4.7 +/-    0.40  0.100 / 0.090
G08     104.5          50.8                5.6 +/-    0.46       7.0 +/-    0.46  0.080 / 0.100
G09     191.9          76.1                5.6 +/-    0.43       5.7 +/-    0.43  0.030 / 0.040
G11     147.6          11.2                4.6 +/-   11.55      12.4 +/-   11.55  0.040 / 0.040
G23     153.9          44.0                6.7 +/-    1.12       9.2 +/-    1.12  0.060 / 0.060
G27     58.7           33.4                4.9 +/-    0.69       8.1 +/-    0.69  0.060 / 0.060
G28     234.6          26.6                5.0 +/-    1.81       9.4 +/-    1.81  0.050 / 0.070
G30     298.8          32.2                4.7 +/-    2.04       7.9 +/-    2.04  0.050 / 0.050