PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/28-10:13:00
G10     278.0          44.7                7.6 +/-    1.22      10.3 +/-    1.22  0.040 / 0.030
G13     38.3           10.4               -1.6 +/-    5.86      -4.5 +/-    5.86  0.030 / 0.030
G15     51.1           40.5                2.3 +/-    0.72       3.3 +/-    0.72  0.110 / 0.430
G20     317.8          63.8                5.0 +/-    0.94       5.5 +/-    0.94  0.130 / 0.720
G21     51.6           75.5                4.3 +/-    0.68       4.4 +/-    0.68  0.090 / 0.050
G24     110.1          19.6                5.4 +/-    1.50      11.9 +/-    1.50  0.090 / 0.050
G27     314.9          23.9                3.7 +/-    1.09       7.4 +/-    1.09  0.160 / 0.390
G29     166.0          17.6                5.2 +/-    1.17      12.2 +/-    1.17  0.180 / 0.300
G32     206.7          14.4                5.1 +/-    1.79      12.9 +/-    1.79  0.120 / 0.190