PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-21:13:00
G01     38.6           12.5                8.9 +/-    4.97      23.5 +/-    4.97  0.100 / 0.180
G02     199.2          12.5               23.1 +/-    3.47      60.9 +/-    3.47  0.110 / 0.170
G06     175.5          41.9               18.1 +/-    1.31      25.6 +/-    1.31  0.110 / 0.180
G13     233.0          19.4               20.3 +/-    2.18      45.3 +/-    2.18  0.100 / 0.160
G17     10.9           66.7               13.3 +/-    1.03      14.3 +/-    1.03  0.050 / 0.060
G19     292.0          71.1               15.0 +/-    1.05      15.7 +/-    1.05  0.040 / 0.050
G24     314.3          23.7               10.4 +/-    1.43      21.0 +/-    1.43  0.070 / 0.080
G28     73.1           48.0               12.5 +/-    1.01      16.2 +/-    1.01  0.070 / 0.080
G30     155.1          21.3               17.0 +/-    1.50      36.2 +/-    1.50  0.190 / 0.350