PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-09:58:00
G01     99.1           28.0                4.4 +/-    1.23       8.0 +/-    1.23  0.060 / 0.090
G07     116.1          51.3                5.4 +/-    0.43       6.7 +/-    0.43  0.040 / 0.080
G08     41.8           18.0                2.6 +/-    2.84       5.9 +/-    2.84  0.040 / 0.050
G11     81.4           44.0                4.7 +/-    1.78       6.4 +/-    1.78  0.030 / 0.050
G13     303.6          33.4                2.5 +/-    1.48       4.1 +/-    1.48  0.120 / 0.170
G17     208.3          41.3                4.3 +/-    0.82       6.1 +/-    0.82  0.120 / 0.150
G18     72.9           24.6                4.8 +/-    1.78       9.4 +/-    1.78  0.030 / 0.030
G19     209.8          20.3                1.8 +/-    4.18       3.9 +/-    4.18  0.030 / 0.030
G28     315.7          59.5                3.3 +/-    1.16       3.8 +/-    1.16  0.110 / 0.230
G30     49.8           80.4                4.2 +/-    0.91       4.3 +/-    0.91  0.080 / 0.120