PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/09-21:57:50
G07     338.5          60.1               12.5 +/-    0.39      14.1 +/-    0.39  0.070 / 0.070
G08     96.1           51.0               15.2 +/-    0.47      18.9 +/-    0.47  0.070 / 0.070
G09     191.3          74.2               15.7 +/-    0.91      16.3 +/-    0.91  0.150 / 0.290
G11     144.5          13.8               14.8 +/-    1.91      38.0 +/-    1.91  0.110 / 0.160
G16     46.4           10.6                7.6 +/-    7.44      20.8 +/-    7.44  0.040 / 0.040
G23     156.1          44.2               14.4 +/-    0.84      19.7 +/-    0.84  0.030 / 0.040
G27     57.9           33.8               10.7 +/-    1.45      17.3 +/-    1.45  0.280 / 0.450
G28     235.9          26.1               15.4 +/-    2.54      29.3 +/-    2.54  0.330 / 0.600
G30     301.2          34.4               11.2 +/-    1.17      17.9 +/-    1.17  0.030 / 0.020