PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/07-06:27:50
G07     38.1           69.1                4.3 +/-    0.63       4.5 +/-    0.63  0.070 / 0.100
G08     54.8           42.8                4.4 +/-    0.75       6.2 +/-    0.75  0.090 / 0.090
G09     178.5          42.1                7.5 +/-    0.66      10.5 +/-    0.66  0.030 / 0.020
G11     123.4          31.1                6.6 +/-    2.09      11.2 +/-    2.09  0.040 / 0.020
G17     198.9          11.0               -5.0 +/-   13.97     -13.7 +/-   13.97  0.130 / 0.190
G23     161.0          14.4                5.2 +/-    3.30      13.0 +/-    3.30  0.140 / 0.400
G27     38.0           10.9                2.4 +/-    2.37       6.6 +/-    2.37  0.030 / 0.040
G28     268.6          50.2                6.3 +/-    2.95       7.9 +/-    2.95  0.050 / 0.050
G30     327.1          55.8                3.6 +/-    0.58       4.2 +/-    0.58  0.080 / 0.060