PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-23:12:40
G02     203.5          37.2               11.4 +/-    0.85      17.4 +/-    0.85  0.120 / 0.100
G06     164.6          68.7               10.8 +/-    0.50      11.5 +/-    0.50  0.110 / 0.080
G12     307.3          14.3                7.7 +/-    3.41      19.5 +/-    3.41  0.060 / 0.130
G17     38.4           47.0               10.1 +/-    1.16      13.2 +/-    1.16  0.090 / 0.150
G19     5.1            64.2                9.8 +/-    0.65      10.8 +/-    0.65  0.180 / 0.290
G24     294.4          39.7                9.1 +/-    6.03      13.3 +/-    6.03  0.180 / 0.310
G28     102.0          33.6               12.5 +/-    0.81      20.3 +/-    0.81  0.040 / 0.030