PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-05:43:10
G10     299.4          53.0                5.1 +/-    1.87       6.2 +/-    1.87  0.070 / 0.100
G14     209.9          12.6                2.0 +/-   11.30       5.2 +/-   11.30  0.070 / 0.080
G15     45.9           26.4                4.4 +/-    1.86       8.3 +/-    1.86  0.040 / 0.030
G20     354.1          65.2                6.1 +/-    0.82       6.6 +/-    0.82  0.040 / 0.030
G21     99.4           72.9                6.7 +/-    0.41       7.0 +/-    0.41  0.050 / 0.070
G24     96.5           26.6                6.1 +/-    1.30      11.4 +/-    1.30  0.060 / 0.050
G27     301.3          33.7                4.1 +/-    2.32       6.7 +/-    2.32  0.180 / 0.620
G32     211.2          28.8                7.1 +/-    1.61      12.9 +/-    1.61  0.210 / 0.560