PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-04:57:50
G02     209.4          54.0                4.8 +/-    1.11       5.8 +/-    1.11  0.060 / 0.120
G06     108.3          80.8                4.9 +/-    0.68       5.0 +/-    0.68  0.050 / 0.110
G12     315.3          27.4                0.9 +/-    1.99       1.8 +/-    1.99  0.110 / 0.280
G17     49.9           38.6                1.9 +/-    0.56       2.9 +/-    0.56  0.090 / 0.330
G19     30.0           54.2                3.2 +/-    0.68       3.8 +/-    0.68  0.030 / 0.070
G24     277.9          42.1                3.1 +/-    1.27       4.4 +/-    1.27  0.040 / 0.080
G28     117.2          19.0                6.5 +/-    1.70      14.7 +/-    1.70  0.090 / 0.090