PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-04:58:00
G01     256.3          37.6                4.9 +/-    1.05       7.4 +/-    1.05  0.040 / 0.040
G03     316.5          37.7                4.1 +/-    1.06       6.2 +/-    1.06  0.040 / 0.050
G11     239.8          14.4                5.8 +/-    1.69      14.7 +/-    1.69  0.100 / 0.090
G14     54.6           44.4                2.7 +/-    0.65       3.6 +/-    0.65  0.070 / 0.120
G18     223.8          30.9                5.1 +/-    1.20       8.8 +/-    1.20  0.040 / 0.090
G22     309.3          61.0                4.6 +/-    1.06       5.2 +/-    1.06  0.040 / 0.090
G25     42.5           11.8                2.5 +/-    1.81       6.6 +/-    1.81  0.120 / 0.310
G26     137.4          35.2                5.7 +/-    1.41       9.1 +/-    1.41  0.140 / 0.290
G31     42.8           60.5                4.5 +/-    0.48       5.1 +/-    0.48  0.130 / 0.300
G32     74.5           24.0                4.0 +/-    0.72       8.0 +/-    0.72  0.210 / 0.370