PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/20-18:28:00
G01     289.0          40.4                8.3 +/-    0.94      12.0 +/-    0.94  0.050 / 0.100
G03     312.7          19.6                9.5 +/-    1.49      21.0 +/-    1.49  0.060 / 0.080
G10     120.8          28.0               22.7 +/-    1.80      41.5 +/-    1.80  0.030 / 0.030
G11     265.6          25.5               10.6 +/-    1.22      20.4 +/-    1.22  0.030 / 0.030
G14     25.2           58.4                9.4 +/-    0.37      10.8 +/-    0.37  0.060 / 0.130
G22     314.1          40.0                8.2 +/-    2.36      11.9 +/-    2.36  0.060 / 0.130
G25     65.6           19.0               11.2 +/-    0.92      25.2 +/-    0.92  0.050 / 0.080
G26     156.1          14.2               13.3 +/-    2.59      33.8 +/-    2.59  0.060 / 0.080
G31     122.1          79.7               11.1 +/-    0.88      11.2 +/-    0.88  0.070 / 0.060
G32     52.5           40.9               11.6 +/-    1.09      16.6 +/-    1.09  0.050 / 0.050