PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-16:42:50
G07     333.5          58.1               12.2 +/-    0.85      14.1 +/-    0.85  0.040 / 0.060
G08     101.8          52.7               14.8 +/-    0.60      18.1 +/-    0.60  0.030 / 0.060
G09     190.8          72.9               15.2 +/-    0.92      15.8 +/-    0.92  0.070 / 0.090
G11     146.1          13.5               15.2 +/-    2.03      39.3 +/-    2.03  0.060 / 0.110
G23     154.3          36.1               13.6 +/-    1.17      21.1 +/-    1.17  0.090 / 0.490
G27     53.9           31.0               13.3 +/-    0.65      22.8 +/-    0.65  0.100 / 0.480
G28     238.2          30.5               11.5 +/-    0.96      19.9 +/-    0.96  0.060 / 0.170
G30     303.3          36.5               11.7 +/-    1.15      18.1 +/-    1.15  0.090 / 0.170