PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-08:42:50
G02     203.7          39.9                5.3 +/-    0.78       7.8 +/-    0.78  0.070 / 0.130
G06     167.7          69.4                4.2 +/-    0.37       4.5 +/-    0.37  0.080 / 0.120
G12     309.3          16.7                3.2 +/-    2.99       7.7 +/-    2.99  0.220 / 0.240
G17     40.4           45.7                1.4 +/-    1.33       1.8 +/-    1.33  0.100 / 0.170
G19     11.7           62.3                0.4 +/-    0.45       0.4 +/-    0.45  0.050 / 0.040
G24     295.3          38.8                1.6 +/-    1.81       2.4 +/-    1.81  0.040 / 0.050
G28     106.5          28.1                5.9 +/-    1.51      10.8 +/-    1.51  0.070 / 0.080