PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-12:58:00
G03     216.4          64.0                8.0 +/-    0.89       8.8 +/-    0.89  0.030 / 0.040
G07     252.6          15.8                4.3 +/-    2.06      10.4 +/-    2.06  0.040 / 0.030
G09     305.5          20.5                3.8 +/-    1.42       8.2 +/-    1.42  0.230 / 0.370
G14     103.3          10.8                8.9 +/-    1.49      24.3 +/-    1.49  0.110 / 0.440
G16     122.7          61.3                9.2 +/-    0.36      10.3 +/-    0.36  0.040 / 0.070
G22     188.9          47.7                7.3 +/-    0.49       9.5 +/-    0.49  0.070 / 0.070
G23     323.8          53.8                6.7 +/-    0.53       8.1 +/-    0.53  0.030 / 0.030
G26     64.5           50.5                6.3 +/-    1.31       7.9 +/-    1.31  0.030 / 0.030
G31     54.9           15.9                6.8 +/-    2.78      16.6 +/-    2.78  0.140 / 0.310