PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/01-04:27:50
G08     275.5          20.1               10.1 +/-    1.36      22.2 +/-    1.36  0.140 / 0.370
G10     51.9           59.4                7.7 +/-    0.93       8.7 +/-    0.93  0.140 / 0.320
G14     253.8          62.3                9.6 +/-    0.89      10.7 +/-    0.89  0.040 / 0.030
G18     315.0          27.7                6.7 +/-    1.66      12.4 +/-    1.66  0.030 / 0.030
G20     89.3           40.7                7.7 +/-    1.32      11.1 +/-    1.32  0.080 / 0.220
G21     154.0          21.6                8.5 +/-    1.40      18.1 +/-    1.40  0.090 / 0.230
G24     42.5           14.2               11.7 +/-    3.13      29.6 +/-    3.13  0.070 / 0.050
G27     237.0          20.4               11.1 +/-    2.91      24.3 +/-    2.91  0.080 / 0.050
G31     178.6          25.1                9.0 +/-    1.31      17.5 +/-    1.31  0.110 / 0.130
G32     306.4          75.7                8.8 +/-    0.55       9.0 +/-    0.55  0.070 / 0.140