PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-18:42:30
G02     82.9           16.2                6.7 +/-    1.74      16.1 +/-    1.74  0.040 / 0.080
G05     44.6           34.9                6.2 +/-    0.63       9.9 +/-    0.63  0.040 / 0.070
G13     97.6           33.3                9.6 +/-    0.91      15.7 +/-    0.91  0.070 / 0.110
G15     150.1          36.5               11.0 +/-    0.95      17.0 +/-    0.95  0.070 / 0.120
G20     234.7          23.1               11.9 +/-    5.43      24.3 +/-    5.43  0.070 / 0.130
G21     297.7          36.1                8.3 +/-    1.05      12.8 +/-    1.05  0.070 / 0.130
G25     206.5          24.2                8.7 +/-    4.10      17.3 +/-    4.10  0.110 / 0.220
G26     304.6          18.6                6.9 +/-    1.52      15.8 +/-    1.52  0.110 / 0.290
G29     16.1           85.9                5.4 +/-    0.69       5.5 +/-    0.69  0.050 / 0.080