PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-12:58:00
G01     247.7          34.5                9.0 +/-    1.93      14.4 +/-    1.93  0.070 / 0.090
G03     315.4          51.2                5.5 +/-    0.82       6.8 +/-    0.82  0.090 / 0.110
G14     62.8           38.9                5.5 +/-    1.14       8.1 +/-    1.14  0.060 / 0.070
G16     164.7          17.8               -4.0 +/-   13.60      -9.2 +/-   13.60  0.050 / 0.070
G18     216.8          24.8                6.2 +/-    2.40      12.2 +/-    2.40  0.050 / 0.080
G22     294.7          73.5               11.3 +/-    0.47      11.7 +/-    0.47  0.050 / 0.090
G23     288.3          20.8                5.4 +/-    3.99      11.8 +/-    3.99  0.030 / 0.030
G26     137.9          38.9                8.0 +/-    0.74      11.9 +/-    0.74  0.030 / 0.030
G31     40.9           57.2                6.1 +/-    0.57       7.1 +/-    0.57  0.200 / 0.180
G32     76.3           26.3                5.3 +/-    1.28      10.0 +/-    1.28  0.130 / 0.280