PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/18-11:57:30
G02     212.0          50.7                5.2 +/-    1.18       6.5 +/-    1.18  0.080 / 0.070
G06     82.3           78.6                3.5 +/-    0.61       3.5 +/-    0.61  0.060 / 0.060
G12     316.6          31.7                4.5 +/-    2.05       7.6 +/-    2.05  0.050 / 0.100
G17     53.2           34.7                3.0 +/-    0.73       4.9 +/-    0.73  0.080 / 0.100
G19     25.6           56.2                3.9 +/-    0.56       4.5 +/-    0.56  0.030 / 0.030
G24     270.1          43.5                4.2 +/-    1.13       5.8 +/-    1.13  0.040 / 0.020
G28     117.5          19.7                5.6 +/-    0.78      12.5 +/-    0.78  0.050 / 0.050