PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/06-02:27:50
G01     70.4           32.9                3.7 +/-    0.34       6.1 +/-    0.34  0.040 / 0.040
G07     137.6          30.9                5.3 +/-    1.75       9.1 +/-    1.75  0.030 / 0.040
G11     55.0           32.3                2.2 +/-    1.08       3.8 +/-    1.08  0.030 / 0.050
G13     275.1          37.2                6.4 +/-    1.04       9.8 +/-    1.04  0.040 / 0.060
G15     301.6          15.8                1.8 +/-    1.81       4.5 +/-    1.81  0.120 / 0.460
G17     233.9          68.3                6.8 +/-    0.97       7.3 +/-    0.97  0.100 / 0.290
G19     224.6          42.9                7.8 +/-    2.25      10.8 +/-    2.25  0.050 / 0.100
G28     21.4           58.9                3.2 +/-    0.35       3.6 +/-    0.35  0.060 / 0.120
G30     135.5          57.1                3.9 +/-    0.86       4.6 +/-    0.86  0.080 / 0.110