PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-13:42:20
G02     224.4          64.1                6.7 +/-    1.03       7.4 +/-    1.03  0.050 / 0.050
G06     45.3           66.4                4.6 +/-    0.49       5.0 +/-    0.49  0.060 / 0.060
G12     321.2          45.8                3.6 +/-    1.33       4.7 +/-    1.33  0.070 / 0.070
G17     64.6           26.0                5.2 +/-    1.06      10.0 +/-    1.06  0.060 / 0.100
G19     43.5           47.6                4.3 +/-    0.48       5.6 +/-    0.48  0.040 / 0.030
G24     251.7          39.2                6.5 +/-    0.86       9.6 +/-    0.86  0.030 / 0.040