PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-15:42:50
G02     209.8          46.3               11.0 +/-    1.83      14.6 +/-    1.83  0.060 / 0.090
G06     95.6           78.4               11.4 +/-    0.75      11.6 +/-    0.75  0.070 / 0.080
G12     316.1          31.3               10.8 +/-    1.12      18.4 +/-    1.12  0.080 / 0.070
G17     49.7           37.8                8.1 +/-    0.98      12.2 +/-    0.98  0.080 / 0.060
G19     19.8           58.6               10.2 +/-    0.40      11.7 +/-    0.40  0.090 / 0.270
G24     277.8          43.1                9.0 +/-    1.07      12.5 +/-    1.07  0.090 / 0.240
G28     114.7          21.7                9.0 +/-    1.38      19.0 +/-    1.38  0.030 / 0.030