PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/04-03:12:40
G02     59.8           32.0                4.5 +/-    0.68       7.5 +/-    0.68  0.090 / 0.040
G05     57.7           60.0                4.5 +/-    0.74       5.1 +/-    0.74  0.080 / 0.040
G12     184.9          33.2                6.7 +/-    1.98      11.1 +/-    1.98  0.040 / 0.020
G13     128.9          14.8                6.8 +/-    2.13      16.9 +/-    2.13  0.040 / 0.010
G15     163.8          11.9                6.2 +/-    2.01      16.7 +/-    2.01  0.100 / 0.180
G20     217.3          21.5                7.7 +/-    1.73      16.3 +/-    1.73  0.070 / 0.210
G21     270.8          16.8                9.7 +/-    2.80      23.1 +/-    2.80  0.050 / 0.090
G25     239.0          52.3                8.1 +/-    0.65      10.0 +/-    0.65  0.060 / 0.100
G29     327.5          53.5                5.9 +/-    0.71       7.1 +/-    0.71  0.070 / 0.030