PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-14:58:00
G01     67.5           32.4                7.4 +/-    1.03      12.4 +/-    1.03  0.030 / 0.040
G07     139.0          28.4                8.1 +/-    1.13      14.6 +/-    1.13  0.040 / 0.040
G11     51.4           28.1                5.3 +/-    0.69       9.6 +/-    0.69  0.060 / 0.090
G13     270.5          37.2                8.2 +/-    1.03      12.6 +/-    1.03  0.060 / 0.080
G15     302.5          14.4                4.0 +/-    1.82      10.1 +/-    1.82  0.060 / 0.130
G17     239.5          71.9                8.4 +/-    0.89       8.7 +/-    0.89  0.050 / 0.170
G18     46.6           16.5                5.8 +/-    0.86      13.8 +/-    0.86  0.040 / 0.060
G19     226.1          41.5               10.2 +/-    0.85      14.4 +/-    0.85  0.040 / 0.060
G28     24.3           58.6                8.2 +/-    0.38       9.4 +/-    0.38  0.050 / 0.140
G30     138.5          60.1                8.9 +/-    0.84      10.0 +/-    0.84  0.050 / 0.130