PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/24-12:57:40
G02     219.0          61.4                5.3 +/-    1.18       6.0 +/-    1.18  0.060 / 0.070
G06     51.4           70.9                4.2 +/-    0.24       4.4 +/-    0.24  0.060 / 0.120
G12     319.2          39.4                2.6 +/-    1.43       3.8 +/-    1.43  0.050 / 0.060
G17     58.1           32.0                2.2 +/-    1.84       3.7 +/-    1.84  0.040 / 0.090
G19     43.9           45.8                3.3 +/-    1.51       4.4 +/-    1.51  0.040 / 0.060
G24     263.4          40.3                6.9 +/-    3.10      10.0 +/-    3.10  0.060 / 0.050
G28     122.4          18.2                5.0 +/-    2.78      11.6 +/-    2.78  0.050 / 0.050