PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/01-17:57:50
G01     90.3           31.8               12.7 +/-    0.43      21.4 +/-    0.43  0.040 / 0.070
G07     125.4          46.0               14.3 +/-    0.97      19.0 +/-    0.97  0.030 / 0.060
G11     69.3           40.2               12.0 +/-    0.33      17.4 +/-    0.33  0.040 / 0.070
G13     294.8          35.9               12.2 +/-    1.08      19.1 +/-    1.08  0.040 / 0.060
G17     214.9          51.0               15.9 +/-    1.24      19.8 +/-    1.24  0.050 / 0.070
G18     64.1           24.0               10.8 +/-    1.27      21.5 +/-    1.27  0.050 / 0.060
G19     214.8          25.3               16.5 +/-    2.89      32.0 +/-    2.89  0.050 / 0.090
G28     349.2          61.7               10.6 +/-    0.51      11.9 +/-    0.51  0.040 / 0.080
G30     104.4          75.8               13.9 +/-    0.74      14.3 +/-    0.74  0.090 / 0.170