PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-12:43:10
G02     206.0          39.0                7.3 +/-    2.48      10.8 +/-    2.48  0.050 / 0.140
G06     141.1          75.3                6.1 +/-    0.63       6.3 +/-    0.63  0.060 / 0.140
G12     310.4          20.8                4.4 +/-    3.09       9.5 +/-    3.09  0.030 / 0.020
G17     39.5           46.4                3.4 +/-    0.84       4.5 +/-    0.84  0.030 / 0.030
G19     16.4           60.3                4.9 +/-    0.69       5.6 +/-    0.69  0.030 / 0.050
G24     291.6          39.6                2.9 +/-    1.36       4.3 +/-    1.36  0.030 / 0.050
G28     104.8          33.3                4.0 +/-    0.63       6.5 +/-    0.63  0.110 / 0.210