PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/04-16:27:50
G01     289.0          41.0                1.6 +/-    2.65       2.3 +/-    2.65  0.070 / 0.100
G03     312.6          19.5                4.9 +/-    1.99      10.9 +/-    1.99  0.070 / 0.100
G10     120.6          26.8               10.3 +/-    0.99      19.3 +/-    0.99  0.160 / 0.230
G11     262.1          25.2                8.3 +/-    4.38      16.0 +/-    4.38  0.130 / 0.310
G14     27.5           57.5                7.5 +/-    1.61       8.8 +/-    1.61  0.090 / 0.090
G18     244.4          47.0                8.0 +/-    6.23      10.4 +/-    6.23  0.110 / 0.060
G22     314.4          40.9                7.0 +/-    1.11      10.1 +/-    1.11  0.060 / 0.050
G25     62.3           17.2                7.1 +/-    0.83      16.8 +/-    0.83  0.050 / 0.050
G31     146.4          78.7                8.3 +/-    0.66       8.4 +/-    0.66  0.100 / 0.080
G32     50.0           43.4                7.0 +/-    1.38       9.6 +/-    1.38  0.080 / 0.090