PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-21:57:40
G07     328.3          56.1               12.4 +/-    0.54      14.6 +/-    0.54  0.080 / 0.200
G08     107.9          51.3               13.4 +/-    0.55      16.7 +/-    0.55  0.090 / 0.160
G09     201.7          77.3               14.5 +/-    0.25      14.8 +/-    0.25  0.050 / 0.060
G11     150.0          10.4                1.5 +/-   23.16       4.0 +/-   23.16  0.070 / 0.080
G16     46.0           10.0                9.3 +/-    3.95      25.9 +/-    3.95  0.040 / 0.040
G23     153.9          43.1               14.2 +/-    0.67      19.6 +/-    0.67  0.030 / 0.040
G27     57.2           32.5               10.7 +/-    0.94      17.8 +/-    0.94  0.140 / 0.790
G28     235.4          27.9               13.9 +/-    1.54      25.5 +/-    1.54  0.120 / 0.670
G30     302.1          36.6               12.8 +/-    2.15      19.7 +/-    2.15  0.060 / 0.060