PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/27-02:42:50
G01     85.0           32.8                4.0 +/-    1.38       6.7 +/-    1.38  0.050 / 0.040
G07     129.3          41.7                5.5 +/-    0.61       7.8 +/-    0.61  0.030 / 0.030
G11     65.8           39.0                4.7 +/-    1.18       6.9 +/-    1.18  0.080 / 0.080
G13     290.4          36.5                4.7 +/-    1.61       7.3 +/-    1.61  0.060 / 0.080
G15     311.6          12.4                3.8 +/-    2.41      10.0 +/-    2.41  0.040 / 0.040
G17     218.4          57.3                6.0 +/-    1.05       7.0 +/-    1.05  0.030 / 0.050
G19     216.8          31.8                5.3 +/-    2.36       8.9 +/-    2.36  0.050 / 0.050
G28     359.2          61.2                3.3 +/-    0.57       3.7 +/-    0.57  0.050 / 0.040
G30     119.0          68.8                5.4 +/-    1.00       5.8 +/-    1.00  0.160 / 0.220