PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-03:12:30
G08     295.5          22.8                8.9 +/-    1.16      18.3 +/-    1.16  0.090 / 0.130
G10     2.7            62.9                7.8 +/-    0.56       8.7 +/-    0.56  0.060 / 0.140
G14     227.8          42.2               14.4 +/-    0.96      20.3 +/-    0.96  0.050 / 0.090
G20     30.9           64.6                9.2 +/-    0.61      10.1 +/-    0.61  0.050 / 0.090
G21     145.5          43.6               11.1 +/-    0.96      15.3 +/-    0.96  0.030 / 0.040
G24     57.1           25.7                7.2 +/-    0.47      13.8 +/-    0.47  0.030 / 0.030
G27     256.9          32.7               11.7 +/-    2.40      19.4 +/-    2.40  0.080 / 0.120
G32     243.1          67.9                9.3 +/-    0.79       9.9 +/-    0.79  0.070 / 0.120