PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/31-05:27:40
G02     58.8           32.6                3.5 +/-    0.67       5.9 +/-    0.67  0.060 / 0.080
G05     60.3           61.5                5.4 +/-    0.39       6.1 +/-    0.39  0.060 / 0.080
G12     186.1          35.8                7.8 +/-    1.96      12.1 +/-    1.96  0.190 / 0.520
G13     130.5          13.5                5.4 +/-    4.22      13.9 +/-    4.22  0.150 / 0.540
G15     164.2          10.8               -2.9 +/-   18.73      -8.0 +/-   18.73  0.040 / 0.030
G20     213.3          38.1                7.2 +/-    2.04      10.9 +/-    2.04  0.050 / 0.030
G21     269.6          16.4                7.4 +/-    2.02      17.8 +/-    2.02  0.090 / 0.130
G25     242.2          53.5                6.8 +/-    0.74       8.2 +/-    0.74  0.090 / 0.130
G29     326.9          52.5                2.6 +/-    0.97       3.1 +/-    0.97  0.060 / 0.110