PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-17:42:50
G02     218.7          60.1               13.0 +/-    0.84      14.8 +/-    0.84  0.060 / 0.090
G06     51.9           71.8               11.2 +/-    0.49      11.7 +/-    0.49  0.080 / 0.090
G12     319.9          39.6               10.7 +/-    1.25      15.7 +/-    1.25  0.070 / 0.080
G17     61.8           28.1                8.1 +/-    1.18      14.8 +/-    1.18  0.050 / 0.080
G19     45.4           45.5                8.6 +/-    0.78      11.5 +/-    0.78  0.060 / 0.130
G24     263.7          40.8               14.1 +/-    0.85      20.2 +/-    0.85  0.050 / 0.110
G28     125.1          10.9               11.0 +/-    2.83      30.2 +/-    2.83  0.040 / 0.040