PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/30-20:57:30
G10     293.5          50.6                9.9 +/-    1.20      12.4 +/-    1.20  0.060 / 0.130
G15     47.5           35.1                8.6 +/-    0.71      13.7 +/-    0.71  0.060 / 0.110
G20     345.5          65.4                8.7 +/-    0.78       9.5 +/-    0.78  0.050 / 0.050
G21     87.1           75.3               11.2 +/-    0.76      11.5 +/-    0.76  0.040 / 0.040
G24     97.5           25.2               10.7 +/-    1.40      20.9 +/-    1.40  0.070 / 0.140
G27     304.5          32.1                9.9 +/-    1.06      16.7 +/-    1.06  0.080 / 0.150
G29     168.3          10.4               13.2 +/-    4.16      36.5 +/-    4.16  0.050 / 0.080
G32     209.2          30.1               12.8 +/-    2.21      22.3 +/-    2.21  0.050 / 0.080