PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/17-12:42:40
G02     59.4           31.7                2.9 +/-    2.10       5.0 +/-    2.10  0.030 / 0.030
G05     62.7           65.2                4.4 +/-    0.79       4.8 +/-    0.79  0.020 / 0.020
G12     181.5          31.3                5.6 +/-    1.45       9.5 +/-    1.45  0.030 / 0.030
G13     127.4          14.1                6.3 +/-    2.63      16.1 +/-    2.63  0.040 / 0.040
G15     162.3          12.9                3.3 +/-    8.44       8.8 +/-    8.44  0.090 / 0.100
G21     270.9          16.6                7.4 +/-    1.94      17.8 +/-    1.94  0.060 / 0.110
G25     238.6          52.9                7.2 +/-    4.34       8.8 +/-    4.34  0.190 / 0.360
G29     327.2          52.4                4.0 +/-    0.38       5.0 +/-    0.38  0.310 / 0.340