PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-08:58:00
G03     253.7          69.5                5.0 +/-    1.40       5.3 +/-    1.40  0.040 / 0.060
G09     301.5          16.7                2.8 +/-    1.70       6.6 +/-    1.70  0.040 / 0.050
G14     95.4           19.2                3.9 +/-    0.69       8.6 +/-    0.69  0.080 / 0.230
G16     129.2          56.3                6.6 +/-    0.55       7.8 +/-    0.55  0.090 / 0.240
G22     197.4          59.3                4.8 +/-    0.80       5.4 +/-    0.80  0.040 / 0.060
G23     316.8          46.8                2.5 +/-    1.06       3.2 +/-    1.06  0.030 / 0.050
G26     73.2           51.9                5.2 +/-    0.30       6.5 +/-    0.30  0.040 / 0.060
G31     50.8           20.8                1.6 +/-    1.04       3.3 +/-    1.04  0.040 / 0.050