PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/08-10:43:10
G01     127.5          11.1               -6.1 +/-   36.02     -16.5 +/-   36.02  0.030 / 0.040
G07     56.0           68.3                0.2 +/-    0.32       0.2 +/-    0.32  0.040 / 0.030
G08     50.3           38.5                0.9 +/-    0.99       1.3 +/-    0.99  0.040 / 0.050
G09     176.3          34.9                2.7 +/-    0.76       4.3 +/-    0.76  0.050 / 0.050
G11     116.9          33.7                2.7 +/-    1.47       4.4 +/-    1.47  0.060 / 0.080
G17     199.1          16.3                4.3 +/-    1.96      10.5 +/-    1.96  0.070 / 0.080
G23     161.2          10.1                2.7 +/-    4.24       7.5 +/-    4.24  0.040 / 0.060
G28     275.5          52.6                0.6 +/-    0.81       0.7 +/-    0.81  0.030 / 0.070
G30     330.2          58.3                0.1 +/-    0.72       0.1 +/-    0.72  0.180 / 0.360