PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/28-12:42:50
G08     275.6          21.8                6.5 +/-    1.79      13.6 +/-    1.79  0.120 / 0.190
G10     43.2           60.9                3.6 +/-    0.95       4.0 +/-    0.95  0.090 / 0.210
G14     248.4          60.6                7.1 +/-    0.48       8.1 +/-    0.48  0.040 / 0.050
G18     315.5          26.5                2.2 +/-    1.94       4.1 +/-    1.94  0.040 / 0.050
G20     85.3           42.8                3.9 +/-    1.20       5.4 +/-    1.20  0.030 / 0.030
G21     151.7          21.0                3.9 +/-    1.94       8.3 +/-    1.94  0.040 / 0.030
G24     43.2           14.9                2.3 +/-    4.09       5.6 +/-    4.09  0.020 / 0.020
G27     241.8          23.0                6.9 +/-    1.99      14.1 +/-    1.99  0.030 / 0.020
G31     182.2          18.2                5.2 +/-    2.67      11.9 +/-    2.67  0.120 / 0.170
G32     284.0          74.0                5.6 +/-    0.53       5.8 +/-    0.53  0.260 / 0.420