PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-02:27:40
G10     277.0          44.5               11.9 +/-    0.99      16.2 +/-    0.99  0.090 / 0.090
G13     38.4           10.8                6.3 +/-    2.52      17.3 +/-    2.52  0.080 / 0.080
G15     51.6           41.1                9.0 +/-    0.67      12.9 +/-    0.67  0.080 / 0.020
G20     314.8          63.2               10.5 +/-    0.67      11.7 +/-    0.67  0.080 / 0.030
G21     28.7           75.9               10.2 +/-    0.85      10.5 +/-    0.85  0.050 / 0.030
G24     113.6          19.0                9.7 +/-    1.59      22.0 +/-    1.59  0.050 / 0.040
G27     314.9          24.3                8.0 +/-    1.08      15.9 +/-    1.08  0.100 / 0.300
G29     167.1          21.3               12.0 +/-    1.46      25.6 +/-    1.46  0.090 / 0.490
G32     206.0          14.7               13.9 +/-    4.36      34.9 +/-    4.36  0.070 / 0.030