PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-09:27:40
G08     293.3          23.3                5.5 +/-    1.87      11.2 +/-    1.87  0.040 / 0.070
G10     8.8            62.8                4.4 +/-    1.13       4.8 +/-    1.13  0.050 / 0.090
G14     229.0          46.9                8.2 +/-    2.57      10.8 +/-    2.57  0.030 / 0.030
G18     317.6          11.4               -4.2 +/-   19.14     -11.2 +/-   19.14  0.040 / 0.020
G20     65.0           52.3                6.4 +/-    1.24       7.9 +/-    1.24  0.030 / 0.030
G21     146.0          38.7                7.6 +/-    0.46      11.3 +/-    0.46  0.030 / 0.030
G24     55.5           24.8                4.8 +/-    2.12       9.5 +/-    2.12  0.120 / 0.140
G27     256.9          32.2                5.6 +/-    1.95       9.3 +/-    1.95  0.100 / 0.130
G32     241.0          61.8                7.5 +/-    0.77       8.4 +/-    0.77  0.070 / 0.110