PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-21:58:00
G01     88.8           32.2               12.8 +/-    1.07      21.4 +/-    1.07  0.170 / 0.290
G07     126.5          45.0               13.8 +/-    0.84      18.6 +/-    0.84  0.140 / 0.240
G08     42.8           10.8               10.1 +/-    1.17      27.8 +/-    1.17  0.100 / 0.110
G11     69.5           40.6               11.1 +/-    1.21      16.0 +/-    1.21  0.100 / 0.100
G13     293.7          36.0               13.9 +/-    3.12      21.6 +/-    3.12  0.030 / 0.030
G17     216.1          50.6               16.9 +/-    1.25      21.2 +/-    1.25  0.030 / 0.030
G18     63.2           23.9               10.0 +/-    1.00      20.0 +/-    1.00  0.050 / 0.120
G19     215.2          27.7               17.1 +/-    1.98      31.6 +/-    1.98  0.070 / 0.130
G28     352.5          61.6               12.5 +/-    0.31      14.1 +/-    0.31  0.040 / 0.040
G30     111.0          72.8               14.0 +/-    0.34      14.6 +/-    0.34  0.060 / 0.040