PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-12:58:00
G05     50.1           14.4                3.1 +/-    1.26       7.8 +/-    1.26  0.040 / 0.060
G10     238.8          16.2                5.8 +/-    2.02      13.9 +/-    2.02  0.050 / 0.070
G13     70.0           35.4                7.0 +/-    0.56      11.0 +/-    0.56  0.080 / 0.170
G15     118.8          54.8                9.1 +/-    0.61      10.8 +/-    0.61  0.080 / 0.230
G16     312.2          12.6                3.1 +/-    2.94       8.2 +/-    2.94  0.040 / 0.100
G20     252.2          40.3                6.8 +/-    1.71       9.9 +/-    1.71  0.050 / 0.120
G21     321.4          52.7                6.0 +/-    0.99       7.3 +/-    0.99  0.090 / 0.200
G26     286.4          18.9                5.3 +/-    1.76      12.0 +/-    1.76  0.070 / 0.170
G29     156.0          65.4                8.5 +/-    1.15       9.2 +/-    1.15  0.050 / 0.040