PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-06:58:00
G10     302.3          53.8                6.1 +/-    1.28       7.3 +/-    1.28  0.070 / 0.040
G14     210.4          14.5                4.1 +/-    3.35      10.2 +/-    3.35  0.060 / 0.040
G15     45.7           24.6                5.2 +/-    2.55      10.3 +/-    2.55  0.040 / 0.030
G20     359.1          65.1                5.5 +/-    0.66       6.0 +/-    0.66  0.040 / 0.030
G21     105.8          71.0                7.9 +/-    0.96       8.3 +/-    0.96  0.070 / 0.110
G24     93.9           27.3                7.5 +/-    1.00      14.0 +/-    1.00  0.070 / 0.100
G27     299.3          34.4                4.8 +/-    1.17       7.7 +/-    1.17  0.150 / 0.570
G32     212.2          29.9                6.2 +/-    2.27      10.8 +/-    2.27  0.180 / 0.490