PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-13:57:40
G02     222.4          63.6                8.7 +/-    0.95       9.6 +/-    0.95  0.050 / 0.090
G06     47.1           68.0                8.5 +/-    0.35       9.1 +/-    0.35  0.040 / 0.070
G12     319.9          41.8                6.8 +/-    0.71       9.6 +/-    0.71  0.060 / 0.110
G17     60.3           30.6                4.3 +/-    1.18       7.4 +/-    1.18  0.070 / 0.100
G19     47.1           43.8                6.7 +/-    1.14       9.2 +/-    1.14  0.030 / 0.020
G24     259.2          39.4                8.8 +/-    2.10      12.9 +/-    2.10  0.030 / 0.020
G28     124.5          15.6                7.5 +/-    2.61      18.5 +/-    2.61  0.050 / 0.060