PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-18:42:50
G02     211.5          51.7               13.5 +/-    0.89      16.7 +/-    0.89  0.050 / 0.060
G06     78.7           77.6               12.3 +/-    0.31      12.6 +/-    0.31  0.080 / 0.060
G12     317.0          32.8                9.0 +/-    1.55      14.9 +/-    1.55  0.030 / 0.030
G17     51.5           37.0               10.5 +/-    1.23      16.1 +/-    1.23  0.020 / 0.020
G19     27.0           55.7               11.7 +/-    1.52      13.8 +/-    1.52  0.060 / 0.120
G24     273.4          42.8               10.7 +/-    2.99      15.0 +/-    2.99  0.070 / 0.070
G28     117.8          18.8               12.3 +/-    1.51      27.8 +/-    1.51  0.050 / 0.030