PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-20:57:40
G10     266.2          37.9               11.5 +/-    1.24      17.3 +/-    1.24  0.090 / 0.170
G13     42.2           18.7                8.3 +/-    0.84      18.8 +/-    0.84  0.090 / 0.150
G15     64.7           54.1               10.6 +/-    0.55      12.7 +/-    0.55  0.050 / 0.060
G16     279.2          12.5                9.1 +/-    2.17      24.1 +/-    2.17  0.040 / 0.050
G20     295.9          59.9                9.7 +/-    0.86      11.1 +/-    0.86  0.140 / 0.530
G21     1.1            71.3               10.7 +/-    0.65      11.3 +/-    0.65  0.130 / 0.460
G24     118.7          14.0               13.1 +/-    1.76      33.3 +/-    1.76  0.080 / 0.250
G27     319.5          17.3                8.8 +/-    1.66      20.7 +/-    1.66  0.080 / 0.220
G29     167.9          32.6               12.3 +/-    1.05      20.5 +/-    1.05  0.130 / 0.410