PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/14-02:57:20
G02     201.5          29.5                7.2 +/-    2.20      12.8 +/-    2.20  0.070 / 0.090
G06     173.1          59.1                7.1 +/-    0.67       8.1 +/-    0.67  0.060 / 0.080
G17     32.9           51.5                5.0 +/-    1.22       6.1 +/-    1.22  0.040 / 0.030
G19     344.8          68.5                4.0 +/-    0.40       4.3 +/-    0.40  0.040 / 0.020
G24     301.3          37.1                2.8 +/-    1.15       4.2 +/-    1.15  0.080 / 0.110
G28     94.8           37.5                6.5 +/-    0.83       9.9 +/-    0.83  0.090 / 0.060