PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/19-02:28:10
G02     209.1          53.0               10.4 +/-    0.52      12.7 +/-    0.52  0.140 / 0.120
G06     103.3          80.1                7.7 +/-    0.63       7.8 +/-    0.63  0.100 / 0.120
G12     315.1          27.2                7.0 +/-    1.59      13.0 +/-    1.59  0.040 / 0.020
G17     47.9           40.6                5.3 +/-    1.14       7.6 +/-    1.14  0.020 / 0.020
G19     28.0           55.2                7.0 +/-    1.61       8.3 +/-    1.61  0.090 / 0.200
G24     278.4          42.2               10.3 +/-    0.99      14.4 +/-    0.99  0.110 / 0.210
G28     116.5          19.7                8.1 +/-    1.55      18.0 +/-    1.55  0.060 / 0.060