PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/20-18:57:50
G08     291.4          23.9               10.1 +/-    1.07      20.3 +/-    1.07  0.110 / 0.080
G10     8.4            62.9                8.3 +/-    1.03       9.2 +/-    1.03  0.130 / 0.070
G14     229.6          46.7                9.5 +/-    2.43      12.5 +/-    2.43  0.040 / 0.080
G20     65.3           52.2                8.5 +/-    1.23      10.5 +/-    1.23  0.050 / 0.080
G21     146.2          38.4               10.2 +/-    0.69      15.2 +/-    0.69  0.150 / 0.190
G24     53.0           22.7                8.1 +/-    2.86      16.7 +/-    2.86  0.200 / 0.160
G27     256.9          31.8                7.9 +/-    1.77      13.4 +/-    1.77  0.120 / 0.160
G32     245.3          67.5                8.3 +/-    0.69       8.9 +/-    0.69  0.110 / 0.140