PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-07:12:40
G01     37.9           11.3                2.3 +/-    1.72       6.2 +/-    1.72  0.070 / 0.130
G02     198.8          12.9                2.4 +/-    2.97       6.2 +/-    2.97  0.060 / 0.130
G06     172.4          43.9                9.7 +/-    1.66      13.3 +/-    1.66  0.090 / 0.370
G13     232.6          19.8                5.0 +/-    1.34      11.0 +/-    1.34  0.100 / 0.340
G15     264.7          10.7                3.0 +/-    1.73       8.3 +/-    1.73  0.050 / 0.040
G17     10.2           67.1               -2.3 +/-    1.63      -2.5 +/-    1.63  0.030 / 0.040
G19     296.2          72.3                7.4 +/-    0.80       7.7 +/-    0.80  0.090 / 0.370
G24     315.2          21.3                1.0 +/-    5.37       2.1 +/-    5.37  0.070 / 0.360
G28     68.5           51.2                5.3 +/-    0.42       6.6 +/-    0.42  0.040 / 0.080
G30     156.8          26.7                7.8 +/-    1.64      14.6 +/-    1.64  0.050 / 0.090