PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/27-06:43:10
G10     295.6          51.8                5.6 +/-    0.66       7.0 +/-    0.66  0.050 / 0.050
G14     209.3          10.4               -7.3 +/-   15.57     -20.3 +/-   15.57  0.050 / 0.040
G15     46.2           28.6                2.3 +/-    0.70       4.2 +/-    0.70  0.050 / 0.100
G20     348.3          65.3                3.8 +/-    0.61       4.2 +/-    0.61  0.060 / 0.100
G21     92.7           73.8                6.9 +/-    0.89       7.2 +/-    0.89  0.050 / 0.040
G24     98.8           25.7                5.9 +/-    0.52      11.3 +/-    0.52  0.040 / 0.040
G27     304.0          32.4                4.9 +/-    1.37       8.1 +/-    1.37  0.070 / 0.140
G32     210.4          25.7                7.7 +/-    1.07      14.9 +/-    1.07  0.070 / 0.120