PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/27-10:42:40
G07     348.3          62.9                5.3 +/-    0.27       5.9 +/-    0.27  0.080 / 0.220
G08     95.2           53.6                4.8 +/-    0.74       5.8 +/-    0.74  0.110 / 0.170
G09     186.5          68.6                5.6 +/-    0.30       6.0 +/-    0.30  0.040 / 0.040
G11     142.4          17.4                3.8 +/-    2.58       8.9 +/-    2.58  0.040 / 0.040
G23     155.7          32.3                5.5 +/-    1.07       9.2 +/-    1.07  0.110 / 0.080
G27     51.0           29.2                3.9 +/-    1.59       6.9 +/-    1.59  0.060 / 0.100
G28     239.4          27.8                6.1 +/-    1.86      11.1 +/-    1.86  0.030 / 0.030
G30     306.7          39.5                4.2 +/-    1.30       6.2 +/-    1.30  0.030 / 0.030