PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/02-14:13:10
G02     202.9          25.6                8.4 +/-    2.77      16.2 +/-    2.77  0.070 / 0.090
G06     160.9          64.7                9.1 +/-    1.50      10.0 +/-    1.50  0.090 / 0.080
G12     306.0          15.8                5.3 +/-    1.83      12.8 +/-    1.83  0.110 / 0.320
G17     32.9           51.6                6.0 +/-    0.72       7.4 +/-    0.72  0.090 / 0.320
G19     335.5          68.9                6.8 +/-    0.78       7.3 +/-    0.78  0.040 / 0.030
G24     302.1          36.5                6.4 +/-    1.55       9.8 +/-    1.55  0.030 / 0.040
G28     96.5           35.1                6.7 +/-    1.03      10.6 +/-    1.03  0.030 / 0.040