PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-14:13:10
G01     92.0           31.4                7.3 +/-    0.45      12.4 +/-    0.45  0.030 / 0.040
G07     124.1          46.9                7.1 +/-    1.03       9.3 +/-    1.03  0.030 / 0.040
G11     69.7           39.9                7.2 +/-    0.40      10.5 +/-    0.40  0.090 / 0.120
G13     296.2          35.7                6.5 +/-    0.57      10.2 +/-    0.57  0.100 / 0.120
G17     213.2          52.3                9.8 +/-    1.55      12.0 +/-    1.55  0.040 / 0.110
G18     65.0           24.0                6.6 +/-    1.24      13.3 +/-    1.24  0.040 / 0.090
G19     214.2          22.8                8.1 +/-    1.74      16.6 +/-    1.74  0.040 / 0.060
G28     345.7          61.8                5.5 +/-    0.67       6.1 +/-    0.67  0.040 / 0.060
G30     95.2           78.1                6.5 +/-    0.61       6.6 +/-    0.61  0.030 / 0.060