PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/10-20:12:50
G01     99.8           28.4               13.4 +/-    0.95      24.4 +/-    0.95  0.060 / 0.050
G07     118.0          47.2               13.4 +/-    0.31      17.5 +/-    0.31  0.040 / 0.050
G08     41.5           13.9                8.0 +/-    1.94      20.4 +/-    1.94  0.040 / 0.050
G11     78.0           42.2               12.4 +/-    1.06      17.4 +/-    1.06  0.040 / 0.040
G13     303.5          33.1               10.3 +/-    1.95      16.9 +/-    1.95  0.040 / 0.030
G17     207.8          45.4               13.5 +/-    0.80      18.1 +/-    0.80  0.030 / 0.030
G18     70.7           23.9               10.3 +/-    1.04      20.6 +/-    1.04  0.240 / 0.360
G19     210.5          19.0                5.7 +/-   20.91      12.9 +/-   20.91  0.320 / 0.310
G28     322.0          60.7               11.1 +/-    0.41      12.5 +/-    0.41  0.070 / 0.140
G30     66.6           79.3               13.0 +/-    0.41      13.2 +/-    0.41  0.100 / 0.120