PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/21-07:27:40
G03     191.4          22.3                6.7 +/-    2.71      14.0 +/-    2.71  0.060 / 0.080
G07     291.3          39.7                4.0 +/-    1.21       5.9 +/-    1.21  0.060 / 0.090
G08     146.1          25.4                7.2 +/-    1.09      14.0 +/-    1.09  0.060 / 0.070
G09     320.9          62.1                5.0 +/-    0.83       5.6 +/-    0.83  0.040 / 0.080
G16     43.5           38.3                2.7 +/-    0.60       4.0 +/-    0.60  0.050 / 0.090
G23     115.8          77.1                5.1 +/-    0.56       5.2 +/-    0.56  0.050 / 0.090
G26     43.8           11.7                1.4 +/-    0.61       3.7 +/-    0.61  0.050 / 0.040
G27     101.3          33.1                6.2 +/-    0.62      10.2 +/-    0.62  0.040 / 0.040
G30     273.2          12.0                4.0 +/-    2.25      10.6 +/-    2.25  0.050 / 0.040