PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/19-02:13:10
G02     7.8            72.8                5.4 +/-    0.46       5.6 +/-    0.46  0.020 / 0.030
G05     159.4          41.2                8.0 +/-    1.52      11.4 +/-    1.52  0.030 / 0.040
G06     43.6           34.2                4.7 +/-    1.52       7.6 +/-    1.52  0.040 / 0.060
G12     294.7          76.8                6.0 +/-    0.76       6.1 +/-    0.76  0.050 / 0.060
G17     89.8           11.5                3.2 +/-    2.17       8.8 +/-    2.17  0.030 / 0.040
G19     80.8           24.0                5.7 +/-    1.06      11.4 +/-    1.06  0.030 / 0.040
G24     223.5          18.1                9.6 +/-    2.51      22.1 +/-    2.51  0.060 / 0.100
G25     315.8          34.1                6.2 +/-    0.68       9.9 +/-    0.68  0.060 / 0.100
G29     291.0          12.5                8.1 +/-    1.89      21.4 +/-    1.89  0.140 / 0.280