PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-10:27:50
G08     309.5          19.4                4.3 +/-    1.04       9.7 +/-    1.04  0.030 / 0.040
G10     332.1          60.1                4.2 +/-    0.46       4.7 +/-    0.46  0.040 / 0.040
G14     217.2          30.8                6.9 +/-    2.34      12.0 +/-    2.34  0.070 / 0.070
G15     46.8           10.3                3.6 +/-    2.80       9.9 +/-    2.80  0.070 / 0.080
G20     36.4           60.6                3.9 +/-    0.74       4.5 +/-    0.74  0.090 / 0.150
G21     133.6          54.4                8.0 +/-    0.94       9.6 +/-    0.94  0.130 / 0.160
G24     73.0           29.2                4.8 +/-    0.96       8.5 +/-    0.96  0.030 / 0.030
G27     278.6          37.1                5.6 +/-    1.41       8.5 +/-    1.41  0.030 / 0.020
G32     222.2          47.0                6.9 +/-    2.02       9.0 +/-    2.02  0.060 / 0.060