PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/13-19:13:10
G10     300.4          53.6                9.6 +/-    1.77      11.6 +/-    1.77  0.050 / 0.090
G15     45.8           26.3                9.2 +/-    2.02      17.4 +/-    2.02  0.070 / 0.070
G20     358.9          65.0               10.4 +/-    0.56      11.3 +/-    0.56  0.040 / 0.050
G21     97.1           74.0               12.5 +/-    0.56      12.9 +/-    0.56  0.040 / 0.040
G24     98.8           27.0               11.3 +/-    0.74      21.1 +/-    0.74  0.100 / 0.160
G27     300.1          34.7                9.3 +/-    1.01      14.9 +/-    1.01  0.090 / 0.110
G32     210.1          33.6               12.4 +/-    1.59      20.3 +/-    1.59  0.170 / 0.130