PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-12:28:00
G02     205.3          37.4                8.4 +/-    0.72      12.7 +/-    0.72  0.120 / 0.120
G06     146.2          73.9                6.8 +/-    0.61       7.1 +/-    0.61  0.080 / 0.120
G12     309.5          19.5                3.5 +/-    1.69       7.7 +/-    1.69  0.040 / 0.040
G17     38.1           47.5                4.4 +/-    1.68       5.7 +/-    1.68  0.040 / 0.040
G19     13.7           61.5                5.1 +/-    0.61       5.8 +/-    0.61  0.050 / 0.030
G24     293.7          39.0                5.1 +/-    1.53       7.6 +/-    1.53  0.040 / 0.030
G28     103.1          34.5                5.4 +/-    0.93       8.6 +/-    0.93  0.030 / 0.030