PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-16:27:50
G01     57.2           29.5                8.7 +/-    0.69      15.5 +/-    0.69  0.040 / 0.050
G07     143.5          19.8               11.3 +/-    1.18      25.1 +/-    1.18  0.050 / 0.050
G11     46.9           21.2                7.7 +/-    1.71      16.3 +/-    1.71  0.050 / 0.100
G13     259.0          34.2               11.6 +/-    0.90      18.7 +/-    0.90  0.060 / 0.110
G15     293.3          15.5                8.9 +/-    3.34      21.8 +/-    3.34  0.040 / 0.060
G17     269.8          77.4               12.6 +/-    0.74      12.9 +/-    0.74  0.030 / 0.060
G18     40.6           10.9                8.4 +/-    1.74      23.1 +/-    1.74  0.070 / 0.180
G19     235.0          50.4               13.0 +/-    1.06      16.3 +/-    1.06  0.080 / 0.230
G28     40.2           55.8               10.6 +/-    0.60      12.5 +/-    0.60  0.080 / 0.260
G30     145.7          50.1               13.0 +/-    1.00      16.4 +/-    1.00  0.080 / 0.270