PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-00:43:10
G01     85.2           32.7                9.0 +/-    0.56      14.9 +/-    0.56  0.050 / 0.060
G07     129.1          42.1               11.7 +/-    1.15      16.4 +/-    1.15  0.040 / 0.060
G11     67.0           39.9                7.0 +/-    0.83      10.1 +/-    0.83  0.050 / 0.050
G13     290.4          36.6                8.5 +/-    0.99      13.1 +/-    0.99  0.030 / 0.050
G15     311.8          12.3                6.1 +/-    2.68      16.2 +/-    2.68  0.060 / 0.100
G17     218.4          55.8                8.2 +/-    1.54       9.7 +/-    1.54  0.050 / 0.090
G19     216.7          31.2               11.0 +/-    2.28      18.9 +/-    2.28  0.050 / 0.100
G28     358.7          61.3                6.1 +/-    0.77       6.8 +/-    0.77  0.040 / 0.080
G30     119.1          68.6               10.1 +/-    0.62      10.8 +/-    0.62  0.070 / 0.110