PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/11-08:12:40
G10     273.9          41.7                5.4 +/-    1.43       7.6 +/-    1.43  0.080 / 0.130
G13     39.6           13.8                2.3 +/-    3.42       5.9 +/-    3.42  0.170 / 0.190
G15     53.1           43.0                3.8 +/-    0.95       5.3 +/-    0.95  0.030 / 0.030
G20     40.6           53.0                4.9 +/-    0.72       5.9 +/-    0.72  0.040 / 0.040
G21     22.8           75.4                4.8 +/-    0.53       5.0 +/-    0.53  0.080 / 0.150
G24     115.2          17.7                6.7 +/-    1.79      15.6 +/-    1.79  0.090 / 0.160
G27     315.0          24.1                3.0 +/-    1.39       5.9 +/-    1.39  0.040 / 0.040
G29     168.5          24.6                5.2 +/-    0.98      10.2 +/-    0.98  0.040 / 0.060
G32     205.0          16.2                5.4 +/-    2.18      13.0 +/-    2.18  0.100 / 0.120