PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/28-11:43:10
G02     204.0          34.7                7.4 +/-    2.14      11.8 +/-    2.14  0.060 / 0.090
G06     153.6          70.9                6.5 +/-    0.32       6.9 +/-    0.32  0.060 / 0.090
G12     307.9          17.4                4.0 +/-    1.48       9.5 +/-    1.48  0.130 / 0.230
G17     35.4           49.5                4.3 +/-    0.69       5.5 +/-    0.69  0.080 / 0.210
G19     8.0            63.6                4.3 +/-    0.46       4.8 +/-    0.46  0.040 / 0.040
G24     297.4          37.5                7.9 +/-    0.65      12.0 +/-    0.65  0.040 / 0.030
G28     99.7           36.8                5.4 +/-    0.64       8.3 +/-    0.64  0.040 / 0.040