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               10.1 +/-    0.38      17.0 +/-    0.38  0.040 / 0.050
G07     140.3          26.1               13.9 +/-    1.25      26.4 +/-    1.25  0.040 / 0.050
G11     50.0           26.4                9.4 +/-    1.64      17.8 +/-    1.64  0.070 / 0.090
G13     267.4          36.6               11.8 +/-    1.53      18.2 +/-    1.53  0.060 / 0.090
G15     300.1          14.9                7.5 +/-    1.74      18.7 +/-    1.74  0.040 / 0.120
G17     245.7          73.6               14.7 +/-    0.76      15.2 +/-    0.76  0.040 / 0.110
G18     44.8           15.1                8.0 +/-    2.22      20.0 +/-    2.22  0.070 / 0.200
G19     228.2          44.0               13.0 +/-    1.72      17.8 +/-    1.72  0.070 / 0.220
G28     28.7           58.0               10.7 +/-    0.31      12.4 +/-    0.31  0.030 / 0.060
G30     140.8          57.4               11.7 +/-    0.82      13.6 +/-    0.82  0.030 / 0.050