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                7.4 +/-    1.05      10.5 +/-    1.05  0.140 / 0.230
G03     312.6          19.5                7.4 +/-    1.27      16.6 +/-    1.27  0.100 / 0.170
G10     120.6          26.8               11.0 +/-    1.68      20.7 +/-    1.68  0.080 / 0.120
G11     262.1          25.2               10.5 +/-    1.88      20.4 +/-    1.88  0.090 / 0.120
G14     27.5           57.5                6.1 +/-    0.60       7.1 +/-    0.60  0.070 / 0.080
G18     244.4          47.0                9.6 +/-    1.10      12.6 +/-    1.10  0.070 / 0.070
G22     314.4          40.9                7.5 +/-    2.04      10.7 +/-    2.04  0.050 / 0.070
G25     62.3           17.2                6.8 +/-    0.90      16.1 +/-    0.90  0.040 / 0.070
G31     146.4          78.7                8.9 +/-    0.94       9.1 +/-    0.94  0.060 / 0.120
G32     50.0           43.4                5.9 +/-    0.39       8.1 +/-    0.39  0.070 / 0.150