PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/26-03:27:50
G01     99.8           28.7                7.5 +/-    0.93      13.6 +/-    0.93  0.030 / 0.040
G07     117.3          50.2                6.7 +/-    0.40       8.5 +/-    0.40  0.030 / 0.050
G08     41.4           12.2                3.1 +/-    2.33       8.1 +/-    2.33  0.070 / 0.120
G11     77.1           41.7                4.3 +/-    1.14       6.1 +/-    1.14  0.080 / 0.140
G13     303.3          33.0                1.8 +/-    2.14       3.0 +/-    2.14  0.120 / 0.110
G17     207.8          47.7                6.4 +/-    0.64       8.3 +/-    0.64  0.100 / 0.110
G18     69.0           23.3                4.0 +/-    1.25       8.2 +/-    1.25  0.030 / 0.050
G19     211.1          17.5                5.6 +/-    2.06      13.2 +/-    2.06  0.050 / 0.050
G28     326.7          61.3                4.5 +/-    0.71       5.0 +/-    0.71  0.070 / 0.120
G30     54.2           80.4                6.1 +/-    0.85       6.2 +/-    0.85  0.080 / 0.120