PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/11-19:57:40
G02     20.2           64.5                7.6 +/-    1.23       8.3 +/-    1.23  0.080 / 0.070
G05     152.4          52.3               10.9 +/-    0.40      13.4 +/-    0.40  0.090 / 0.070
G06     48.0           24.0                7.1 +/-    2.85      14.2 +/-    2.85  0.040 / 0.060
G12     235.4          78.5                8.1 +/-    0.59       8.3 +/-    0.59  0.050 / 0.050
G19     91.4           14.8                8.7 +/-    2.06      21.7 +/-    2.06  0.110 / 0.240
G25     309.3          44.7                8.8 +/-    1.20      12.0 +/-    1.20  0.110 / 0.270
G29     299.8          21.2                7.5 +/-    2.60      16.1 +/-    2.60  0.030 / 0.030