PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-09:42:40
G10     297.3          52.2                5.8 +/-    1.44       7.1 +/-    1.44  0.050 / 0.080
G14     209.6          11.9                5.2 +/-    9.99      13.9 +/-    9.99  0.070 / 0.110
G15     46.1           27.7                1.5 +/-    1.78       2.8 +/-    1.78  0.040 / 0.040
G20     351.7          65.3                3.2 +/-    0.74       3.5 +/-    0.74  0.030 / 0.040
G21     100.3          71.3                5.1 +/-    0.99       5.4 +/-    0.99  0.030 / 0.040
G24     96.3           26.1                6.2 +/-    0.58      11.8 +/-    0.58  0.040 / 0.050
G27     303.1          32.6                5.7 +/-    1.44       9.4 +/-    1.44  0.090 / 0.150
G32     210.9          27.2                7.6 +/-    1.16      14.0 +/-    1.16  0.090 / 0.170