PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/27-09:27:20
G02     202.1          33.9                7.0 +/-    1.17      11.4 +/-    1.17  0.050 / 0.100
G06     170.9          63.9                7.0 +/-    0.46       7.7 +/-    0.46  0.070 / 0.110
G12     306.3          12.6                3.8 +/-    1.95      10.0 +/-    1.95  0.070 / 0.070
G17     35.8           49.5                3.5 +/-    1.08       4.4 +/-    1.08  0.060 / 0.090
G19     1.1            65.6                3.9 +/-    0.58       4.3 +/-    0.58  0.030 / 0.030
G24     301.3          36.1                4.3 +/-    1.65       6.7 +/-    1.65  0.040 / 0.040
G28     101.3          31.8                5.2 +/-    0.92       8.9 +/-    0.92  0.160 / 0.180