PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-17:42:40
G02     61.1           32.9                7.6 +/-    0.68      12.6 +/-    0.68  0.030 / 0.040
G05     54.7           60.4                6.4 +/-    0.38       7.3 +/-    0.38  0.030 / 0.030
G12     181.9          26.0               10.0 +/-    1.47      19.2 +/-    1.47  0.170 / 0.300
G13     124.3          18.1                9.8 +/-    1.42      22.5 +/-    1.42  0.190 / 0.390
G15     165.5          13.3               10.2 +/-    1.30      26.5 +/-    1.30  0.080 / 0.130
G21     275.0          20.0                5.6 +/-    2.26      12.3 +/-    2.26  0.070 / 0.160
G25     227.1          48.0                8.8 +/-    1.62      11.4 +/-    1.62  0.090 / 0.460
G29     330.8          58.1                5.3 +/-    0.90       6.1 +/-    0.90  0.110 / 0.450