PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/18-22:58:00
G10     296.6          52.3               10.0 +/-    1.61      12.3 +/-    1.61  0.040 / 0.050
G15     46.4           29.8                7.8 +/-    1.54      13.7 +/-    1.54  0.050 / 0.040
G20     349.3          65.3                9.4 +/-    0.37      10.3 +/-    0.37  0.090 / 0.090
G21     88.0           75.6               10.3 +/-    0.60      10.6 +/-    0.60  0.130 / 0.090
G24     100.6          26.0               10.3 +/-    0.81      19.8 +/-    0.81  0.080 / 0.120
G27     302.8          33.4                8.4 +/-    2.23      13.8 +/-    2.23  0.110 / 0.130
G32     209.5          30.0               13.2 +/-    3.36      23.1 +/-    3.36  0.050 / 0.090