PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-16:28:00
G10     296.2          52.3                7.9 +/-    2.67       9.7 +/-    2.67  0.090 / 0.080
G15     46.0           27.2                8.7 +/-    3.14      16.2 +/-    3.14  0.070 / 0.080
G20     354.8          65.3                9.0 +/-    0.98       9.8 +/-    0.98  0.150 / 0.360
G21     89.2           74.8                9.4 +/-    0.25       9.7 +/-    0.25  0.140 / 0.430
G24     101.8          25.8                9.0 +/-    1.75      17.2 +/-    1.75  0.030 / 0.030
G27     303.0          33.6                6.6 +/-    2.13      10.7 +/-    2.13  0.040 / 0.030
G29     168.1          10.5                8.7 +/-    1.81      24.0 +/-    1.81  0.060 / 0.070
G32     208.8          31.3               10.0 +/-    1.59      17.1 +/-    1.59  0.070 / 0.090