PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/14-13:28:00
G07     37.9           69.7                8.1 +/-    1.05       8.6 +/-    1.05  0.040 / 0.070
G08     54.2           42.8                7.6 +/-    1.40      10.5 +/-    1.40  0.050 / 0.050
G09     177.4          39.7               10.2 +/-    0.78      14.9 +/-    0.78  0.210 / 0.300
G11     122.6          32.6                9.5 +/-    1.34      15.8 +/-    1.34  0.230 / 0.430
G17     199.6          10.2               -7.3 +/-   16.79     -20.4 +/-   16.79  0.060 / 0.080
G18     107.8          14.3                9.6 +/-    1.90      24.4 +/-    1.90  0.060 / 0.070
G23     160.2          10.9                8.9 +/-    5.40      24.3 +/-    5.40  0.030 / 0.030
G27     38.0           11.0                7.6 +/-    2.86      20.6 +/-    2.86  0.030 / 0.040
G28     269.1          50.2                7.9 +/-    1.00       9.9 +/-    1.00  0.080 / 0.150
G30     327.0          56.1                6.8 +/-    1.62       8.0 +/-    1.62  0.080 / 0.140