PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-08:27:50
G01     63.8           31.6                3.7 +/-    0.58       6.3 +/-    0.58  0.030 / 0.060
G07     140.6          24.4                6.7 +/-    1.70      13.2 +/-    1.70  0.040 / 0.050
G11     50.0           25.7                4.1 +/-    0.67       7.9 +/-    0.67  0.080 / 0.270
G13     268.7          35.9                6.2 +/-    0.99       9.7 +/-    0.99  0.080 / 0.240
G15     297.1          16.4                2.8 +/-    1.54       6.8 +/-    1.54  0.030 / 0.050
G17     250.8          75.8                6.9 +/-    1.01       7.1 +/-    1.01  0.040 / 0.070
G19     229.7          49.3                4.4 +/-    1.14       5.6 +/-    1.14  0.050 / 0.140
G28     31.2           57.4                3.5 +/-    0.76       4.1 +/-    0.76  0.070 / 0.140
G30     140.6          55.4                6.2 +/-    1.21       7.4 +/-    1.21  0.060 / 0.100