PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/19-14:28:00
G01     314.6          26.5                4.6 +/-    0.94       8.7 +/-    0.94  0.110 / 0.160
G10     94.4           46.1                6.6 +/-    1.25       8.8 +/-    1.25  0.100 / 0.130
G11     291.8          27.2                5.5 +/-    1.04      10.2 +/-    1.04  0.060 / 0.050
G14     332.5          70.8                4.6 +/-    0.98       4.8 +/-    0.98  0.050 / 0.040
G18     289.1          49.3                7.3 +/-    4.50       9.3 +/-    4.50  0.040 / 0.040
G20     113.6          21.5                7.0 +/-    1.75      14.9 +/-    1.75  0.050 / 0.040
G22     306.3          19.7                2.7 +/-    1.20       6.0 +/-    1.20  0.040 / 0.030
G25     89.5           12.4                7.7 +/-    1.84      20.5 +/-    1.84  0.040 / 0.030
G31     176.6          50.4                7.8 +/-    0.67       9.8 +/-    0.67  0.060 / 0.050
G32     18.3           62.5                5.0 +/-    0.89       5.6 +/-    0.89  0.050 / 0.050