PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/27-18:28:00
G10     271.0          40.8               10.4 +/-    1.46      15.0 +/-    1.46  0.160 / 0.270
G13     40.3           15.3                8.8 +/-    2.13      21.8 +/-    2.13  0.170 / 0.220
G15     57.8           49.1                8.5 +/-    0.43      10.9 +/-    0.43  0.040 / 0.050
G16     275.9          10.9                8.7 +/-    3.55      23.8 +/-    3.55  0.050 / 0.040
G20     304.7          61.8                9.3 +/-    0.95      10.3 +/-    0.95  0.170 / 0.720
G21     16.9           74.2               10.4 +/-    0.80      10.8 +/-    0.80  0.130 / 0.530
G24     114.0          16.6               10.1 +/-    0.96      24.2 +/-    0.96  0.130 / 0.490
G27     317.8          20.2                9.4 +/-    1.82      20.6 +/-    1.82  0.120 / 0.510
G29     167.9          27.3               12.0 +/-    0.99      22.3 +/-    0.99  0.090 / 0.220
G32     204.7          12.6               10.8 +/-    2.08      28.3 +/-    2.08  0.090 / 0.220