PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-03:12:30
G10     305.7          54.9                9.3 +/-    1.15      11.1 +/-    1.15  0.040 / 0.040
G14     211.1          15.6               16.1 +/-    2.86      39.4 +/-    2.86  0.040 / 0.050
G15     45.6           23.2                6.5 +/-    0.63      13.2 +/-    0.63  0.070 / 0.030
G20     2.8            64.8                9.5 +/-    0.59      10.3 +/-    0.59  0.060 / 0.070
G21     108.4          71.3               10.3 +/-    1.05      10.8 +/-    1.05  0.030 / 0.020
G24     93.0           28.0                8.7 +/-    1.38      15.8 +/-    1.38  0.040 / 0.020
G27     296.6          35.6               10.6 +/-    1.12      16.6 +/-    1.12  0.220 / 0.630
G32     212.6          34.1               15.1 +/-    2.70      24.3 +/-    2.70  0.210 / 0.330