PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-23:27:30
G02     235.6          74.2               11.4 +/-    0.61      11.8 +/-    0.61  0.050 / 0.060
G05     172.0          14.3               14.8 +/-    3.08      37.3 +/-    3.08  0.030 / 0.050
G06     41.1           64.0                9.5 +/-    0.52      10.4 +/-    0.52  0.100 / 0.090
G12     320.5          46.2                9.7 +/-    0.39      12.8 +/-    0.39  0.080 / 0.100
G17     68.5           23.5               10.4 +/-    3.36      21.0 +/-    3.36  0.030 / 0.020
G19     54.1           40.0                9.6 +/-    1.43      14.0 +/-    1.43  0.030 / 0.030
G24     247.0          36.1               13.0 +/-    2.23      20.2 +/-    2.23  0.120 / 0.180