PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/23-19:43:10
G05     52.9           10.3                7.9 +/-    1.01      22.0 +/-    1.01  0.160 / 0.340
G10     244.3          21.4               17.6 +/-    1.09      37.5 +/-    1.09  0.110 / 0.350
G13     61.2           33.3               10.9 +/-    0.60      17.8 +/-    0.60  0.050 / 0.050
G15     112.4          58.5               13.3 +/-    0.60      15.3 +/-    0.60  0.040 / 0.060
G16     302.8          15.4                8.9 +/-    2.81      21.9 +/-    2.81  0.130 / 0.630
G20     260.1          45.6               13.7 +/-    1.79      18.3 +/-    1.79  0.140 / 0.610
G21     325.2          54.9               11.9 +/-    0.97      14.2 +/-    0.97  0.060 / 0.130
G26     275.3          18.2               12.5 +/-    2.02      28.7 +/-    2.02  0.060 / 0.120
G29     162.1          59.3               15.2 +/-    0.80      17.4 +/-    0.80  0.030 / 0.050