PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-15:58:10
G01     65.5           32.1                8.8 +/-    1.64      14.7 +/-    1.64  0.030 / 0.030
G07     139.9          26.9               11.3 +/-    0.87      21.1 +/-    0.87  0.030 / 0.020
G11     50.6           27.1                6.5 +/-    1.73      12.2 +/-    1.73  0.060 / 0.100
G13     268.4          36.8               10.9 +/-    1.92      16.7 +/-    1.92  0.060 / 0.120
G15     300.5          14.9                6.8 +/-    2.15      17.0 +/-    2.15  0.070 / 0.110
G17     243.1          72.5               11.7 +/-    0.31      12.2 +/-    0.31  0.080 / 0.120
G18     45.4           15.6                8.0 +/-    1.61      19.6 +/-    1.61  0.140 / 0.330
G19     227.6          43.4               12.8 +/-    2.02      17.7 +/-    2.02  0.150 / 0.260
G28     27.4           58.2               10.2 +/-    1.67      11.8 +/-    1.67  0.050 / 0.060
G30     140.0          58.0               10.7 +/-    0.31      12.3 +/-    0.31  0.060 / 0.060