PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/04-10:27:50
G01     89.9           30.9                3.9 +/-    1.20       6.7 +/-    1.20  0.040 / 0.050
G07     124.6          44.3                6.0 +/-    0.86       8.1 +/-    0.86  0.040 / 0.050
G08     42.3           11.4                2.3 +/-    2.23       6.1 +/-    2.23  0.040 / 0.060
G11     70.5           41.8                4.3 +/-    1.09       6.1 +/-    1.09  0.040 / 0.050
G13     294.9          36.9                6.0 +/-    4.16       9.3 +/-    4.16  0.060 / 0.160
G17     213.0          49.4                6.2 +/-    0.51       7.9 +/-    0.51  0.060 / 0.140
G18     64.1           23.9                3.5 +/-    1.24       6.9 +/-    1.24  0.030 / 0.030
G19     213.0          27.9                4.6 +/-    2.26       8.4 +/-    2.26  0.030 / 0.020
G28     331.6          61.0                3.1 +/-    0.72       3.5 +/-    0.72  0.200 / 0.160
G30     97.9           78.0                4.7 +/-    0.37       4.8 +/-    0.37  0.090 / 0.180