PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/21-23:42:50
G01     62.5           31.3               10.0 +/-    1.48      17.0 +/-    1.48  0.070 / 0.060
G07     141.3          24.8               12.1 +/-    1.16      23.8 +/-    1.16  0.070 / 0.070
G11     50.6           27.5                7.3 +/-    2.30      13.5 +/-    2.30  0.080 / 0.100
G13     266.0          35.8               14.2 +/-    1.42      22.1 +/-    1.42  0.080 / 0.110
G15     295.5          16.5               10.5 +/-    1.02      25.1 +/-    1.02  0.030 / 0.040
G17     247.0          71.7               11.9 +/-    0.62      12.4 +/-    0.62  0.040 / 0.040
G18     329.2          -20.3               8.2 +/-    1.97      17.9 +/-    1.97  0.030 / 0.030
G19     230.5          48.5               12.0 +/-    2.14      15.5 +/-    2.14  0.030 / 0.070
G28     33.0           57.1               11.8 +/-    0.58      13.8 +/-    0.58  0.170 / 0.250
G30     141.5          51.5               12.8 +/-    0.74      15.9 +/-    0.74  0.140 / 0.150