PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/05-02:27:50
G01     72.7           33.1                2.7 +/-    1.00       4.4 +/-    1.00  0.040 / 0.050
G07     136.5          32.6                6.6 +/-    1.31      11.0 +/-    1.31  0.040 / 0.040
G11     56.5           33.5                3.2 +/-    2.04       5.2 +/-    2.04  0.050 / 0.070
G13     277.6          37.3                4.9 +/-    1.46       7.5 +/-    1.46  0.040 / 0.060
G15     303.3          15.5                1.9 +/-    1.41       4.6 +/-    1.41  0.070 / 0.080
G17     230.7          66.6                6.4 +/-    0.88       6.9 +/-    0.88  0.070 / 0.090
G19     223.1          41.2                6.0 +/-    2.40       8.6 +/-    2.40  0.040 / 0.030
G28     18.1           59.4                4.3 +/-    1.21       4.9 +/-    1.21  0.040 / 0.030
G30     133.6          59.0                6.6 +/-    0.46       7.5 +/-    0.46  0.080 / 0.220