PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/24-18:12:30
G02     219.8          61.9               10.8 +/-    0.46      12.0 +/-    0.46  0.040 / 0.080
G06     49.4           69.1               10.3 +/-    0.22      11.0 +/-    0.22  0.040 / 0.080
G12     320.8          43.1               10.1 +/-    1.37      14.0 +/-    1.37  0.130 / 0.420
G17     60.6           29.8                8.5 +/-    1.34      14.9 +/-    1.34  0.100 / 0.450
G19     40.3           49.1               10.1 +/-    0.32      12.8 +/-    0.32  0.030 / 0.060
G24     258.6          40.7               11.8 +/-    1.06      16.9 +/-    1.06  0.030 / 0.050
G28     125.0          11.0                8.9 +/-    3.94      24.3 +/-    3.94  0.060 / 0.090