PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/06-14:57:50
G01     108.8          24.6               12.5 +/-    0.99      24.5 +/-    0.99  0.080 / 0.080
G07     104.1          59.7               11.2 +/-    0.98      12.8 +/-    0.98  0.080 / 0.090
G08     42.1           21.7                8.7 +/-    3.54      18.4 +/-    3.54  0.030 / 0.020
G09     174.4          14.1               10.7 +/-    1.70      27.1 +/-    1.70  0.030 / 0.020
G11     91.0           42.6                9.4 +/-    0.94      13.1 +/-    0.94  0.040 / 0.050
G13     310.8          27.7                8.6 +/-    1.43      15.8 +/-    1.43  0.040 / 0.050
G17     205.3          35.5               12.6 +/-    1.46      19.8 +/-    1.46  0.070 / 0.150
G18     82.1           24.0                8.4 +/-    2.27      16.8 +/-    2.27  0.070 / 0.150
G28     314.3          60.6               10.3 +/-    0.71      11.7 +/-    0.71  0.030 / 0.040
G30     13.8           77.0               12.1 +/-    0.68      12.4 +/-    0.68  0.040 / 0.040