PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-20:57:40
G02     35.7           53.2               10.2 +/-    0.70      12.4 +/-    0.70  0.040 / 0.030
G05     129.8          65.6               10.1 +/-    0.36      11.0 +/-    0.36  0.030 / 0.030
G06     56.8           11.0                9.2 +/-    2.06      25.0 +/-    2.06  0.030 / 0.050
G12     189.1          60.4               10.9 +/-    0.55      12.3 +/-    0.55  0.040 / 0.040
G19     102.6          9.4                11.5 +/-    1.53      32.4 +/-    1.53  0.030 / 0.040
G25     289.3          56.2                9.2 +/-    3.67      10.8 +/-    3.67  0.040 / 0.040
G29     309.8          30.1               10.3 +/-    1.55      18.0 +/-    1.55  0.130 / 0.160