PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-09:28:10
G02     349.9          77.2                2.9 +/-    0.75       2.9 +/-    0.75  0.110 / 0.190
G05     164.8          34.6                3.8 +/-    1.00       6.1 +/-    1.00  0.110 / 0.310
G06     41.4           40.0                2.6 +/-    0.96       3.7 +/-    0.96  0.080 / 0.050
G12     308.5          72.4                4.1 +/-    0.80       4.3 +/-    0.80  0.050 / 0.050
G19     75.6           27.7                4.3 +/-    2.23       7.9 +/-    2.23  0.040 / 0.030
G24     222.5          20.0                4.1 +/-    3.18       9.1 +/-    3.18  0.030 / 0.030
G25     315.7          36.8                3.7 +/-    1.61       5.7 +/-    1.61  0.050 / 0.080
G29     288.1          11.3               -5.2 +/-   13.83     -14.2 +/-   13.83  0.050 / 0.070