PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-15:28:00
G01     89.6           32.0               10.5 +/-    0.96      17.6 +/-    0.96  0.020 / 0.040
G07     126.0          45.2               12.3 +/-    0.92      16.5 +/-    0.92  0.030 / 0.030
G11     67.7           39.4                9.4 +/-    0.62      13.8 +/-    0.62  0.090 / 0.110
G13     293.9          36.3               10.3 +/-    1.18      16.0 +/-    1.18  0.090 / 0.120
G17     215.0          53.5               14.5 +/-    0.67      17.5 +/-    0.67  0.050 / 0.070
G18     63.1           23.7                8.7 +/-    0.65      17.6 +/-    0.65  0.040 / 0.060
G19     215.1          25.0               12.1 +/-    2.67      23.5 +/-    2.67  0.040 / 0.060
G28     350.0          61.7                9.3 +/-    0.56      10.4 +/-    0.56  0.040 / 0.050
G30     104.7          76.3               12.6 +/-    0.82      12.9 +/-    0.82  0.040 / 0.080