PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-15:27:50
G01     64.6           31.9                9.7 +/-    1.55      16.3 +/-    1.55  0.040 / 0.040
G07     140.3          26.1               12.2 +/-    1.24      23.3 +/-    1.24  0.040 / 0.040
G11     50.0           26.4                7.1 +/-    1.70      13.5 +/-    1.70  0.060 / 0.130
G13     267.4          36.6               11.6 +/-    1.44      18.0 +/-    1.44  0.060 / 0.110
G15     300.1          14.9                7.0 +/-    1.17      17.6 +/-    1.17  0.070 / 0.110
G17     245.7          73.6               13.5 +/-    0.29      14.0 +/-    0.29  0.070 / 0.120
G18     44.8           15.1                8.1 +/-    2.50      20.1 +/-    2.50  0.060 / 0.070
G19     228.2          44.0               13.3 +/-    2.07      18.2 +/-    2.07  0.080 / 0.090
G28     28.7           58.0               12.0 +/-    1.01      13.9 +/-    1.01  0.140 / 0.290
G30     140.8          57.4               12.7 +/-    1.07      14.7 +/-    1.07  0.140 / 0.260