PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-13:57:50
G01     99.7           28.7                8.9 +/-    0.90      16.1 +/-    0.90  0.090 / 0.140
G07     117.1          49.6               10.2 +/-    0.95      12.9 +/-    0.95  0.090 / 0.110
G08     41.7           12.8                7.2 +/-    2.94      18.9 +/-    2.94  0.030 / 0.020
G11     77.3           39.9                9.4 +/-    1.36      13.7 +/-    1.36  0.030 / 0.020
G13     305.4          30.9                9.7 +/-    1.07      16.7 +/-    1.07  0.030 / 0.040
G17     208.4          47.4                8.7 +/-    1.11      11.3 +/-    1.11  0.040 / 0.040
G19     210.9          20.8                9.3 +/-    3.37      20.1 +/-    3.37  0.040 / 0.040
G28     331.9          61.6                7.9 +/-    0.84       8.9 +/-    0.84  0.030 / 0.040
G30     46.6           80.0                9.6 +/-    0.72       9.7 +/-    0.72  0.080 / 0.090