PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-23:58:10
G05     46.6           22.3                6.5 +/-    2.57      13.6 +/-    2.57  0.220 / 0.440
G13     84.1           35.3               12.2 +/-    1.07      19.3 +/-    1.07  0.340 / 0.350
G15     132.9          47.6               13.1 +/-    0.54      17.1 +/-    0.54  0.080 / 0.070
G20     242.1          31.3               13.5 +/-    1.61      23.1 +/-    1.61  0.050 / 0.080
G21     306.7          42.0               10.9 +/-    0.90      15.3 +/-    0.90  0.090 / 0.110
G25     203.5          17.4               12.9 +/-    4.76      30.2 +/-    4.76  0.060 / 0.110
G26     295.7          19.8                9.3 +/-    1.09      20.5 +/-    1.09  0.120 / 0.230
G29     140.9          79.0               11.5 +/-    0.31      11.7 +/-    0.31  0.180 / 0.200