PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-12:12:30
G02     204.8          36.4                4.6 +/-    1.39       7.1 +/-    1.39  0.090 / 0.090
G06     149.3          72.8                5.3 +/-    0.58       5.5 +/-    0.58  0.090 / 0.090
G12     308.9          18.7                2.8 +/-    3.02       6.4 +/-    3.02  0.050 / 0.040
G17     37.1           48.3                3.5 +/-    1.28       4.5 +/-    1.28  0.050 / 0.040
G19     11.6           62.3                3.4 +/-    0.59       3.8 +/-    0.59  0.040 / 0.030
G24     295.1          38.4                3.3 +/-    2.23       5.0 +/-    2.23  0.050 / 0.040
G28     101.9          35.4                3.8 +/-    0.61       6.0 +/-    0.61  0.070 / 0.090