PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-13:12:40
G03     311.1          17.0                5.1 +/-    1.78      12.1 +/-    1.78  0.040 / 0.040
G10     116.4          32.1                6.7 +/-    0.53      11.2 +/-    0.53  0.040 / 0.040
G11     272.1          26.5                7.2 +/-    1.03      13.6 +/-    1.03  0.110 / 0.120
G14     11.7           62.8                5.5 +/-    0.83       6.1 +/-    0.83  0.060 / 0.110
G18     260.9          48.7                9.4 +/-    7.87      12.1 +/-    7.87  0.050 / 0.090
G22     313.8          38.8                4.7 +/-    1.67       6.9 +/-    1.67  0.050 / 0.070
G25     71.9           18.9                5.6 +/-    1.59      12.6 +/-    1.59  0.080 / 0.170
G31     138.4          76.7                7.5 +/-    0.60       7.7 +/-    0.60  0.090 / 0.210
G32     48.3           43.6                6.2 +/-    1.46       8.6 +/-    1.46  0.070 / 0.080