PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-22:57:50
G10     250.7          27.0               15.8 +/-    1.75      29.5 +/-    1.75  0.030 / 0.050
G13     53.3           29.6               10.2 +/-    1.30      18.0 +/-    1.30  0.040 / 0.050
G15     91.6           59.1               12.8 +/-    0.33      14.6 +/-    0.33  0.170 / 0.770
G16     293.8          16.0                9.5 +/-    3.73      23.0 +/-    3.73  0.130 / 0.660
G20     255.6          23.5                8.0 +/-    1.14      16.2 +/-    1.14  0.070 / 0.180
G21     332.5          59.6               11.0 +/-    0.85      12.6 +/-    0.85  0.060 / 0.170
G26     266.0          15.6               15.2 +/-    2.50      37.3 +/-    2.50  0.030 / 0.040
G29     165.3          51.0               11.9 +/-    0.78      14.8 +/-    0.78  0.030 / 0.040