PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-10:43:10
G08     299.7          20.5                6.8 +/-    1.82      14.9 +/-    1.82  0.050 / 0.090
G10     2.6            62.9                5.7 +/-    0.52       6.3 +/-    0.52  0.050 / 0.080
G14     228.2          41.7                8.3 +/-    1.06      11.8 +/-    1.06  0.030 / 0.030
G20     90.3           13.8                3.8 +/-    1.76       9.7 +/-    1.76  0.030 / 0.020
G21     145.4          41.5                9.8 +/-    0.68      13.9 +/-    0.68  0.090 / 0.310
G24     58.0           26.6                4.9 +/-    1.43       9.2 +/-    1.43  0.080 / 0.260
G27     255.6          32.4                8.6 +/-    1.80      14.3 +/-    1.80  0.070 / 0.100
G32     243.7          67.7                7.3 +/-    0.69       7.8 +/-    0.69  0.060 / 0.090