PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/20-18:43:10
G10     299.5          53.3                8.1 +/-    1.45       9.8 +/-    1.45  0.050 / 0.100
G15     45.9           26.5                7.6 +/-    1.71      14.4 +/-    1.71  0.060 / 0.090
G20     358.0          65.1                8.4 +/-    0.78       9.1 +/-    0.78  0.040 / 0.040
G21     95.4           74.3               10.1 +/-    0.70      10.5 +/-    0.70  0.040 / 0.040
G24     99.5           26.8                9.4 +/-    0.77      17.6 +/-    0.77  0.060 / 0.120
G27     300.7          34.5                7.6 +/-    1.43      12.1 +/-    1.43  0.080 / 0.120
G32     209.8          33.1               11.1 +/-    1.90      18.2 +/-    1.90  0.070 / 0.070