PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/12-13:58:10
G02     56.9           35.3                4.8 +/-    1.19       7.7 +/-    1.19  0.220 / 0.320
G05     65.3           66.0                4.2 +/-    0.46       4.6 +/-    0.46  0.250 / 0.320
G12     184.6          34.9                5.8 +/-    0.71       9.2 +/-    0.71  0.060 / 0.060
G13     129.5          13.5                8.7 +/-    2.23      22.4 +/-    2.23  0.060 / 0.070
G21     270.2          17.3                3.5 +/-    3.86       8.2 +/-    3.86  0.110 / 0.070
G25     232.2          52.8                4.3 +/-    2.99       5.3 +/-    2.99  0.090 / 0.070
G29     327.4          52.8                2.6 +/-    0.74       3.2 +/-    0.74  0.150 / 0.370