PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/14-14:28:00
G10     280.1          46.4                6.1 +/-    1.28       8.1 +/-    1.28  0.110 / 0.150
G15     49.3           36.6                3.4 +/-    0.60       5.3 +/-    0.60  0.100 / 0.120
G20     327.9          65.1                4.1 +/-    0.98       4.5 +/-    0.98  0.080 / 0.160
G21     42.5           76.3                5.9 +/-    0.66       6.1 +/-    0.66  0.080 / 0.140
G24     113.2          20.1                8.4 +/-    0.95      18.5 +/-    0.95  0.040 / 0.040
G27     312.9          26.7                3.4 +/-    2.18       6.4 +/-    2.18  0.040 / 0.040
G29     168.2          21.7                7.0 +/-    0.88      14.8 +/-    0.88  0.080 / 0.150
G32     205.2          20.2                5.2 +/-    1.79      11.5 +/-    1.79  0.080 / 0.130