PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/19-17:27:40
G01     227.1          18.3                9.5 +/-    3.70      21.7 +/-    3.70  0.150 / 0.230
G03     287.8          68.8                9.5 +/-    0.75      10.1 +/-    0.75  0.260 / 0.180
G14     85.4           24.3               10.5 +/-    1.10      20.8 +/-    1.10  0.110 / 0.200
G16     152.7          40.8               11.0 +/-    0.83      15.8 +/-    0.83  0.120 / 0.170
G22     214.2          71.0               10.1 +/-    1.09      10.6 +/-    1.09  0.040 / 0.030
G23     305.3          34.9                8.8 +/-    1.28      13.9 +/-    1.28  0.030 / 0.040
G26     110.4          54.8               10.3 +/-    0.44      12.3 +/-    0.44  0.290 / 0.270
G31     43.8           36.8                8.5 +/-    0.97      13.1 +/-    0.97  0.160 / 0.290
G32     96.9           9.7                10.6 +/-    1.55      29.7 +/-    1.55  0.070 / 0.090