PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-12:58:10
G01     123.6          14.4                7.1 +/-    2.94      17.9 +/-    2.94  0.030 / 0.040
G07     65.7           68.7                3.8 +/-    1.03       4.0 +/-    1.03  0.040 / 0.040
G08     47.2           35.2                3.3 +/-    0.66       5.2 +/-    0.66  0.180 / 0.340
G09     176.3          29.8                4.9 +/-    1.37       8.6 +/-    1.37  0.170 / 0.270
G11     112.5          37.6                5.3 +/-    0.81       8.0 +/-    0.81  0.050 / 0.060
G13     319.8          15.3                1.9 +/-    2.40       4.7 +/-    2.40  0.040 / 0.070
G17     200.4          19.4                4.4 +/-    1.85       9.8 +/-    1.85  0.050 / 0.120
G18     99.3           18.6                5.3 +/-    1.03      12.0 +/-    1.03  0.050 / 0.120
G28     283.0          54.9                5.2 +/-    0.86       6.2 +/-    0.86  0.030 / 0.040
G30     336.7          63.3                3.2 +/-    0.75       3.5 +/-    0.75  0.020 / 0.030