PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-12:58:00
G01     314.8          25.5                2.8 +/-    2.61       5.4 +/-    2.61  0.050 / 0.060
G10     93.4           47.7                3.5 +/-    0.77       4.6 +/-    0.77  0.050 / 0.060
G11     296.0          25.2                6.0 +/-    1.64      11.6 +/-    1.64  0.050 / 0.070
G14     319.1          70.1                3.6 +/-    0.67       3.8 +/-    0.67  0.040 / 0.080
G18     294.8          45.5                5.3 +/-    1.00       7.2 +/-    1.00  0.100 / 0.260
G22     306.2          20.7                3.5 +/-    1.73       7.6 +/-    1.73  0.090 / 0.250
G25     93.5           12.8                5.4 +/-    1.91      14.1 +/-    1.91  0.120 / 0.360
G31     171.3          54.3                7.3 +/-    0.93       8.8 +/-    0.93  0.120 / 0.380
G32     25.2           59.4                3.2 +/-    0.74       3.7 +/-    0.74  0.040 / 0.050