PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-11:27:30
G08     315.4          14.7                1.9 +/-    2.52       4.7 +/-    2.52  0.070 / 0.060
G10     323.9          58.5                5.7 +/-    0.39       6.5 +/-    0.39  0.070 / 0.060
G14     216.5          24.9                6.2 +/-    3.05      12.1 +/-    3.05  0.110 / 0.340
G15     46.2           12.7                2.8 +/-    1.50       7.2 +/-    1.50  0.180 / 0.230
G20     80.2           15.5                4.6 +/-    2.06      11.2 +/-    2.06  0.110 / 0.210
G21     130.1          59.4                8.1 +/-    0.30       9.3 +/-    0.30  0.190 / 0.320
G24     79.1           30.3                6.5 +/-    1.49      11.3 +/-    1.49  0.030 / 0.030
G27     279.0          37.9                6.8 +/-    1.56      10.2 +/-    1.56  0.040 / 0.050
G32     220.1          49.6                7.6 +/-    1.62       9.6 +/-    1.62  0.030 / 0.030