PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/12-20:27:50
G05     52.8           10.1                8.8 +/-    4.02      24.4 +/-    4.02  0.360 / 0.420
G10     244.0          21.1               13.5 +/-    2.37      28.9 +/-    2.37  0.110 / 0.380
G13     61.7           33.5               10.7 +/-    1.10      17.4 +/-    1.10  0.090 / 0.370
G15     115.1          58.3               11.3 +/-    0.44      13.1 +/-    0.44  0.110 / 0.350
G16     303.1          15.4                9.0 +/-    1.62      22.2 +/-    1.62  0.040 / 0.040
G20     259.6          45.2               13.1 +/-    2.81      17.7 +/-    2.81  0.030 / 0.030
G21     324.4          54.4               12.8 +/-    0.43      15.3 +/-    0.43  0.040 / 0.060
G26     275.5          18.4               11.3 +/-    0.99      25.8 +/-    0.99  0.030 / 0.060
G29     162.1          60.0               12.9 +/-    0.38      14.7 +/-    0.38  0.090 / 0.100