PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/26-02:27:50
G01     95.4           30.4                6.2 +/-    1.26      10.7 +/-    1.26  0.030 / 0.050
G07     120.9          49.5                6.0 +/-    0.51       7.6 +/-    0.51  0.040 / 0.050
G08     42.1           12.4                2.9 +/-    2.77       7.6 +/-    2.77  0.090 / 0.080
G11     76.5           42.1                5.4 +/-    0.89       7.6 +/-    0.89  0.090 / 0.080
G13     300.5          33.6                2.9 +/-    1.04       4.8 +/-    1.04  0.180 / 0.290
G17     211.7          48.5                6.7 +/-    0.63       8.6 +/-    0.63  0.180 / 0.210
G19     212.6          23.6                7.1 +/-    2.30      14.4 +/-    2.30  0.040 / 0.040
G28     341.6          61.9                4.2 +/-    0.69       4.6 +/-    0.69  0.030 / 0.040
G30     95.1           75.5                5.9 +/-    0.60       6.1 +/-    0.60  0.040 / 0.050