PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/19-12:28:00
G08     279.2          20.0                3.6 +/-    2.02       7.8 +/-    2.02  0.040 / 0.050
G10     45.2           61.3                3.9 +/-    0.98       4.4 +/-    0.98  0.040 / 0.050
G14     249.9          58.5                5.9 +/-    0.93       6.8 +/-    0.93  0.080 / 0.160
G21     152.7          21.8                4.6 +/-    3.31       9.8 +/-    3.31  0.100 / 0.190
G24     43.5           15.9                2.4 +/-    3.17       5.9 +/-    3.17  0.110 / 0.150
G27     237.1          20.8                5.3 +/-    2.19      11.5 +/-    2.19  0.310 / 0.520
G31     179.0          23.6                3.6 +/-    0.92       7.2 +/-    0.92  0.110 / 0.130
G32     312.1          76.5                5.4 +/-    0.39       5.5 +/-    0.39  0.100 / 0.120