PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-08:12:50
G01     248.3          35.2                9.2 +/-    1.92      14.5 +/-    1.92  0.040 / 0.030
G03     316.0          46.9                5.9 +/-    1.28       7.7 +/-    1.28  0.050 / 0.040
G11     236.2          10.8                5.7 +/-    5.77      15.7 +/-    5.77  0.050 / 0.030
G14     61.0           40.3                3.1 +/-    1.26       4.5 +/-    1.26  0.050 / 0.040
G18     218.6          26.0                7.0 +/-    4.63      13.3 +/-    4.63  0.100 / 0.100
G22     302.0          68.2                5.3 +/-    0.45       5.7 +/-    0.45  0.080 / 0.090
G25     39.7           9.7                -0.1 +/-    2.70      -0.2 +/-    2.70  0.050 / 0.090
G26     136.2          38.7                5.9 +/-    0.56       8.8 +/-    0.56  0.060 / 0.110
G31     41.6           56.2                4.7 +/-    0.39       5.5 +/-    0.39  0.070 / 0.360
G32     76.9           24.2                4.9 +/-    1.51       9.8 +/-    1.51  0.070 / 0.370