PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-15:28:00
G10     265.1          37.5                8.8 +/-    1.37      13.3 +/-    1.37  0.200 / 0.350
G13     42.7           19.3                6.0 +/-    1.73      13.5 +/-    1.73  0.280 / 0.360
G15     62.5           51.5                8.6 +/-    0.75      10.7 +/-    0.75  0.120 / 0.250
G16     282.2          12.6                5.9 +/-    1.95      15.4 +/-    1.95  0.150 / 0.260
G20     294.2          59.5                8.3 +/-    1.00       9.5 +/-    1.00  0.030 / 0.030
G21     7.1            71.8                8.6 +/-    0.75       9.0 +/-    0.75  0.040 / 0.030
G24     117.6          13.6               11.9 +/-    2.04      30.5 +/-    2.04  0.120 / 0.230
G27     320.4          15.3                5.1 +/-    1.02      12.7 +/-    1.02  0.140 / 0.260
G29     166.7          32.0               11.5 +/-    1.50      19.4 +/-    1.50  0.070 / 0.100