PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-08:27:20
G08     317.5          14.2                3.1 +/-    2.77       7.9 +/-    2.77  0.040 / 0.040
G10     314.3          56.9                5.2 +/-    1.57       6.0 +/-    1.57  0.040 / 0.030
G14     212.8          21.5                4.6 +/-    2.03       9.8 +/-    2.03  0.060 / 0.040
G15     45.6           18.3                3.0 +/-    2.38       6.9 +/-    2.38  0.060 / 0.050
G20     16.2           63.7                5.3 +/-    0.73       5.8 +/-    0.73  0.060 / 0.060
G21     121.2          64.5                8.0 +/-    0.71       8.7 +/-    0.71  0.080 / 0.100
G24     85.1           29.0                6.3 +/-    1.15      11.2 +/-    1.15  0.140 / 0.170
G27     290.9          36.5                4.5 +/-    2.23       6.9 +/-    2.23  0.140 / 0.260
G32     215.9          36.3                7.9 +/-    1.09      12.2 +/-    1.09  0.060 / 0.080