PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-01:12:40
G10     266.6          38.0               12.1 +/-    0.99      18.3 +/-    0.99  0.170 / 0.130
G13     42.1           18.5                9.2 +/-    2.93      21.0 +/-    2.93  0.110 / 0.160
G15     61.4           51.2               10.2 +/-    0.70      12.6 +/-    0.70  0.070 / 0.040
G16     278.0          12.4               11.1 +/-    1.34      29.5 +/-    1.34  0.060 / 0.060
G20     278.8          46.9               15.4 +/-    0.62      20.2 +/-    0.62  0.220 / 0.300
G21     359.2          71.2               11.5 +/-    0.64      12.1 +/-    0.64  0.120 / 0.200
G24     119.5          14.1               11.9 +/-    1.87      30.1 +/-    1.87  0.200 / 0.280
G27     318.9          18.5               10.4 +/-    1.71      23.8 +/-    1.71  0.150 / 0.290
G29     168.3          32.6               12.3 +/-    0.62      20.5 +/-    0.62  0.170 / 0.370