PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/30-06:28:00
G07     353.9          64.4                5.8 +/-    0.81       6.3 +/-    0.81  0.040 / 0.040
G08     83.5           53.1                7.2 +/-    0.92       8.8 +/-    0.92  0.030 / 0.040
G09     180.2          61.2                7.1 +/-    0.55       8.0 +/-    0.55  0.170 / 0.090
G11     140.4          20.5                4.2 +/-    2.93       9.1 +/-    2.93  0.120 / 0.130
G23     158.0          30.0                5.7 +/-    1.23      10.0 +/-    1.23  0.040 / 0.040
G27     46.8           25.6                3.7 +/-    1.95       7.2 +/-    1.95  0.040 / 0.040
G28     243.2          30.6                6.5 +/-    1.78      11.3 +/-    1.78  0.110 / 0.100
G30     308.9          40.7                4.8 +/-    1.43       7.0 +/-    1.43  0.090 / 0.080