PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-02:42:50
G01     58.6           30.0                4.9 +/-    1.96       8.6 +/-    1.96  0.040 / 0.040
G06     181.5          14.5                6.7 +/-    2.76      16.9 +/-    2.76  0.050 / 0.040
G07     143.0          21.0                5.2 +/-    2.07      11.1 +/-    2.07  0.190 / 0.230
G11     48.6           24.5                3.3 +/-    1.24       6.5 +/-    1.24  0.150 / 0.190
G13     261.8          34.5                6.2 +/-    1.81       9.9 +/-    1.81  0.050 / 0.120
G15     291.6          16.8                4.7 +/-    2.27      11.1 +/-    2.27  0.070 / 0.130
G17     263.0          76.2                7.5 +/-    0.49       7.7 +/-    0.49  0.030 / 0.020
G19     234.7          52.7                7.1 +/-    2.33       8.7 +/-    2.33  0.030 / 0.020
G28     39.4           55.8                4.2 +/-    1.73       4.9 +/-    1.73  0.110 / 0.080
G30     143.7          46.4                6.7 +/-    0.67       8.9 +/-    0.67  0.090 / 0.070